tests/drivers/adc/adc_api results into build failure on nRF platforms

[nniranjhana]

The test in tests/drivers/adc/adc_api results into build error on nRF boards.

Arch: ARM
Platforms: nrf51_pca10028, nrf52840_pca10056, nrf52_pca10040

Error log on console:

[ 26%] Building C object zephyr/CMakeFiles/zephyr.dir/misc/printk.c.obj
[ 27%] Building C object zephyr/CMakeFiles/zephyr.dir/misc/generated/configs.c.obj
In file included from /home/nj/zephyr/include/toolchain.h:21:0,
                 from /home/nj/zephyr/tests/drivers/adc/adc_api/build/zephyr/misc/generated/configs.c:3:
/home/nj/zephyr/tests/drivers/adc/adc_api/build/zephyr/misc/generated/configs.c: In function ‘_ConfigAbsSyms’:
/home/nj/zephyr/include/toolchain/gcc.h:341:51: error: expected expression before ‘)’ token
   "\n\t.type\t" #name ",%%object" :  : "n"(~(value)))
                                                   ^
/home/nj/zephyr/tests/drivers/adc/adc_api/build/zephyr/misc/generated/configs.c:322:1: note: in expansion of macro ‘GEN_ABSOLUTE_SYM’
 GEN_ABSOLUTE_SYM(CONFIG_NET_BUF_LOG_LEVEL, );
 ^~~~~~~~~~~~~~~~
make[2]: *** [zephyr/CMakeFiles/zephyr.dir/build.make:167: zephyr/CMakeFiles/zephyr.dir/misc/generated/configs.c.obj] Error 1
make[1]: *** [CMakeFiles/Makefile2:1026: zephyr/CMakeFiles/zephyr.dir/all] Error 2
make: *** [Makefile:84: all] Error 2

Steps to reproduce:

cd zephyr/tests/drivers/adc/adc_api
rm -rf build && mkdir build && cd build
cmake -D BOARD=nrf52_pca10040 ..
make

Check the build log.

[nniranjhana]

Closing this, as reported in #10775 it is not just for drivers, but a build failure from the toolchain across many tests.