UPSTREAM: kbuild: clang: fix build failures with sparse check

We should avoid using the space character when passing arguments to
clang, because static code analysis check tool such as sparse may
misinterpret the arguments followed by spaces as build targets hence
cause the build to fail.

Signed-off-by: David Lin <dtwlin@google.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
(cherry picked from commit bb3f38c3c5b759163e09b9152629cc789731de47)
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: khusika <khusikadhamar@gmail.com>

Makefile

@@ -595,11 +595,11 @@ all: vmlinux
 ifeq ($(cc-name),clang)
 ifneq ($(CROSS_COMPILE),)
 CLANG_TRIPLE	?= $(CROSS_COMPILE)
-CLANG_TARGET	:= -target $(notdir $(CLANG_TRIPLE:%-=%))
+CLANG_TARGET	:= --target=$(notdir $(CROSS_COMPILE:%-=%))
 GCC_TOOLCHAIN	:= $(realpath $(dir $(shell which $(LD)))/..)
 endif
 ifneq ($(GCC_TOOLCHAIN),)
-CLANG_GCC_TC	:= -gcc-toolchain $(GCC_TOOLCHAIN)
+CLANG_GCC_TC	:= --gcc-toolchain=$(GCC_TOOLCHAIN)
 endif
 KBUILD_CFLAGS += $(CLANG_TARGET) $(CLANG_GCC_TC)
 KBUILD_AFLAGS += $(CLANG_TARGET) $(CLANG_GCC_TC)