[flang][rt] Enable Count and CountDim for device build

[clementval]

No description provided.

[llvm-ci]

LLVM Buildbot has detected a new failure on builder ppc64-flang-aix running on ppc64-flang-aix-test while building flang-rt at step 5 "build-unified-tree".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/201/builds/4830

Here is the relevant piece of the build log for the reference

Step 5 (build-unified-tree) failure: build (failure)
...
2.444 [18/162/83] Building C object CMakeFiles/clang_rt.builtins-powerpc.dir/ucmpdi2.c.o
2.449 [17/162/84] Building C object CMakeFiles/clang_rt.builtins-powerpc.dir/udivdi3.c.o
2.459 [16/162/85] Building C object CMakeFiles/clang_rt.builtins-powerpc.dir/udivmoddi4.c.o
2.466 [15/162/86] Building C object CMakeFiles/clang_rt.builtins-powerpc.dir/udivmodsi4.c.o
2.472 [14/162/87] Building C object CMakeFiles/clang_rt.builtins-powerpc.dir/udivmodti4.c.o
2.477 [13/162/88] Building C object CMakeFiles/clang_rt.builtins-powerpc.dir/udivsi3.c.o
2.485 [12/162/89] Building C object CMakeFiles/clang_rt.builtins-powerpc.dir/udivti3.c.o
2.508 [11/162/90] Building C object CMakeFiles/clang_rt.builtins-powerpc.dir/umoddi3.c.o
2.525 [10/162/91] Building C object CMakeFiles/clang_rt.builtins-powerpc.dir/umodsi3.c.o
2.532 [9/162/92] Building C object CMakeFiles/clang_rt.builtins-powerpc.dir/muldc3.c.o
FAILED: CMakeFiles/clang_rt.builtins-powerpc.dir/muldc3.c.o 
/home/llvm/llvm-external-buildbots/workers/ppc64-flang-aix-test/ppc64-flang-aix-build/build/./bin/clang --target=powerpc64-ibm-aix -DVISIBILITY_HIDDEN  -O3 -DNDEBUG -m32 -fno-lto -std=c11 -fPIC -fno-builtin -fvisibility=hidden -fomit-frame-pointer -MD -MT CMakeFiles/clang_rt.builtins-powerpc.dir/muldc3.c.o -MF CMakeFiles/clang_rt.builtins-powerpc.dir/muldc3.c.o.d -o CMakeFiles/clang_rt.builtins-powerpc.dir/muldc3.c.o -c /home/llvm/llvm-external-buildbots/workers/ppc64-flang-aix-test/ppc64-flang-aix-build/llvm-project/compiler-rt/lib/builtins/muldc3.c
fatal error: error in backend: Cannot select: intrinsic %llvm.ppc.altivec.vupklsw
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace, preprocessed source, and associated run script.
Stack dump:
0.	Program arguments: /home/llvm/llvm-external-buildbots/workers/ppc64-flang-aix-test/ppc64-flang-aix-build/build/./bin/clang --target=powerpc64-ibm-aix -DVISIBILITY_HIDDEN -O3 -DNDEBUG -m32 -fno-lto -std=c11 -fPIC -fno-builtin -fvisibility=hidden -fomit-frame-pointer -MD -MT CMakeFiles/clang_rt.builtins-powerpc.dir/muldc3.c.o -MF CMakeFiles/clang_rt.builtins-powerpc.dir/muldc3.c.o.d -o CMakeFiles/clang_rt.builtins-powerpc.dir/muldc3.c.o -c /home/llvm/llvm-external-buildbots/workers/ppc64-flang-aix-test/ppc64-flang-aix-build/llvm-project/compiler-rt/lib/builtins/muldc3.c
1.	<eof> parser at end of file
2.	Code generation
3.	Running pass 'Function Pass Manager' on module '/home/llvm/llvm-external-buildbots/workers/ppc64-flang-aix-test/ppc64-flang-aix-build/llvm-project/compiler-rt/lib/builtins/muldc3.c'.
4.	Running pass 'PowerPC DAG->DAG Pattern Instruction Selection' on function '@__muldc3'
clang: error: clang frontend command failed with exit code 70 (use -v to see invocation)
clang version 21.0.0git
Target: powerpc-ibm-aix
Thread model: posix
InstalledDir: /home/llvm/llvm-external-buildbots/workers/ppc64-flang-aix-test/ppc64-flang-aix-build/build/bin
Build config: +assertions
clang: note: diagnostic msg: 
********************

PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
clang: note: diagnostic msg: /tmp/muldc3-a038d0.c
clang: note: diagnostic msg: /tmp/muldc3-a038d0.sh
clang: note: diagnostic msg: 

********************
2.540 [9/161/93] Building C object CMakeFiles/clang_rt.builtins-powerpc.dir/umodti3.c.o
2.548 [9/160/94] Building C object CMakeFiles/clang_rt.builtins-powerpc.dir/emutls.c.o
2.551 [9/159/95] Building C object CMakeFiles/clang_rt.builtins-powerpc.dir/enable_execute_stack.c.o
2.552 [9/158/96] Building C object CMakeFiles/clang_rt.builtins-powerpc.dir/gcc_personality_v0.c.o
2.554 [9/157/97] Building C object CMakeFiles/clang_rt.builtins-powerpc.dir/clear_cache.c.o
2.556 [9/156/98] Building C object CMakeFiles/clang_rt.builtins-powerpc64.dir/ppc/fixunstfdi.c.o
2.556 [9/155/99] Building C object CMakeFiles/clang_rt.builtins-powerpc64.dir/ppc/floatunditf.c.o
2.558 [9/154/100] Building C object CMakeFiles/clang_rt.builtins-powerpc64.dir/ppc/gcc_qadd.c.o
2.577 [9/153/101] Building C object CMakeFiles/clang_rt.builtins-powerpc64.dir/absvdi2.c.o
2.588 [9/152/102] Building C object CMakeFiles/clang_rt.builtins-powerpc64.dir/ppc/gcc_qmul.c.o
2.619 [9/151/103] Building C object CMakeFiles/clang_rt.builtins-powerpc64.dir/ppc/divtc3.c.o
2.624 [9/150/104] Building C object CMakeFiles/clang_rt.builtins-powerpc64.dir/absvsi2.c.o
2.633 [9/149/105] Building C object CMakeFiles/clang_rt.builtins-powerpc64.dir/apple_versioning.c.o