[PATCH kernel] powerpc/makefile: Remove flag duplicates when generating vdso linker scripts

[Alexey Kardashevskiy]

The cmd_cpp_lds_S rule already has -P and -U$(ARCH) so there is no need
in duplicating these, clean that up. Since only -C is left and
scripts/Makefile.build have -C removed since
commit 5cb0512c02ec ("Kbuild: don't pass "-C" to preprocessor when processing linker scripts")
this follows the lead and removes CPPFLAGS_vdso(32|64).lds altogether.

Signed-off-by: Alexey Kardashevskiy <aik@xxxxxxxxx>
---

scripts/checkpatch.pl complains as it does not handle quotes in
the commit subject line well. oh well.

---
 arch/powerpc/kernel/vdso32/Makefile | 1 -
 arch/powerpc/kernel/vdso64/Makefile | 1 -
 2 files changed, 2 deletions(-)

diff --git a/arch/powerpc/kernel/vdso32/Makefile b/arch/powerpc/kernel/vdso32/Makefile
index 7d9a6fee0e3d..7420e88d5aa3 100644
--- a/arch/powerpc/kernel/vdso32/Makefile
+++ b/arch/powerpc/kernel/vdso32/Makefile
@@ -44,7 +44,6 @@ asflags-y := -D__VDSO32__ -s
 
 obj-y += vdso32_wrapper.o
 targets += vdso32.lds
-CPPFLAGS_vdso32.lds += -P -C -Upowerpc
 
 # link rule for the .so file, .lds has to be first
 $(obj)/vdso32.so.dbg: $(src)/vdso32.lds $(obj-vdso32) $(obj)/vgettimeofday.o FORCE
diff --git a/arch/powerpc/kernel/vdso64/Makefile b/arch/powerpc/kernel/vdso64/Makefile
index 2813e3f98db6..fb118630c334 100644
--- a/arch/powerpc/kernel/vdso64/Makefile
+++ b/arch/powerpc/kernel/vdso64/Makefile
@@ -30,7 +30,6 @@ ccflags-y := -shared -fno-common -fno-builtin -nostdlib \
 asflags-y := -D__VDSO64__ -s
 
 targets += vdso64.lds
-CPPFLAGS_vdso64.lds += -P -C -U$(ARCH)
 
 # link rule for the .so file, .lds has to be first
 $(obj)/vdso64.so.dbg: $(src)/vdso64.lds $(obj-vdso64) $(obj)/vgettimeofday.o FORCE
-- 
2.30.2