[PATCH 2/2] build: fix building u-boot.lds with Clang as a cross-compiler

[Dmitrii Sharshakov]

Make sure to pass Clang flags to the KBUILD_CPPFLAGS as well, as this
variable is used for flags during compiling for target

Skipping this leads to Clang being invoked with args for target, but
without target indication, thus defaulting to host arch:

  LDS     u-boot.lds
clang: error: ... '-mabi=' for target 'x86_64-suse-linux'
clang: error: ... '-mno-thumb' for target 'x86_64-suse-linux'
clang: error: ... '-mno-unaligned-access' for target 'x86_64-suse-linux'
clang: error: ... '-ffixed-r9' for target 'x86_64-suse-linux'
clang: error: ... '-mno-movt' for target 'x86_64-suse-linux'
make: *** [Makefile:2345: u-boot.lds] Fehler 1

Signed-off-by: Dmitrii Sharshakov <d3dx12.xx at gmail.com>
---
 Makefile | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Makefile b/Makefile
index 750f8a84b1f..c10bf71b9ac 100644
--- a/Makefile
+++ b/Makefile
@@ -608,6 +608,7 @@ CLANG_FLAGS	+= --gcc-toolchain=$(GCC_TOOLCHAIN)
 endif
 CLANG_FLAGS	+= -no-integrated-as
 KBUILD_CFLAGS	+= $(CLANG_FLAGS)
+KBUILD_CPPFLAGS	+= $(CLANG_FLAGS)
 KBUILD_AFLAGS	+= $(CLANG_FLAGS)
 export CLANG_FLAGS
 endif

-- 
2.51.1