powerpc/vdso: Skip objtool from running on VDSO files

Do not run objtool on VDSO files, by using OBJECT_FILES_NON_STANDARD.

Suggested-by: Christophe Leroy <[email protected]>
Tested-by: Naveen N. Rao <[email protected]>
Reviewed-by: Naveen N. Rao <[email protected]>
Reviewed-by: Christophe Leroy <[email protected]>
Acked-by: Josh Poimboeuf <[email protected]>
Signed-off-by: Sathvika Vasireddy <[email protected]>
Signed-off-by: Michael Ellerman <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

Author: sathvika-v

arch/powerpc/kernel/vdso/Makefile

@@ -102,3 +102,5 @@ quiet_cmd_vdso64ld_and_check = VDSO64L $@
       cmd_vdso64ld_and_check = $(VDSOCC) $(c_flags) $(CC64FLAGS) -o $@ -Wl,-T$(filter %.lds,$^) $(filter %.o,$^) -z noexecstack ; $(cmd_vdso_check)
 quiet_cmd_vdso64as = VDSO64A $@
       cmd_vdso64as = $(VDSOCC) $(a_flags) $(CC64FLAGS) $(AS64FLAGS) -c -o $@ $<
+
+OBJECT_FILES_NON_STANDARD := y