efi: stub: define DISABLE_BRANCH_PROFILING for all architectures

efi: stub: define DISABLE_BRANCH_PROFILING for all architectures

This moves the DISABLE_BRANCH_PROFILING define from the x86 specific
to the general CFLAGS definition for the stub. This fixes build errors
when building for arm64 with CONFIG_PROFILE_ALL_BRANCHES_ENABLED.

Reviewed-by: Matt Fleming <matt@codeblueprint.co.uk>
Reported-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
(cherry picked from commit b523e185bba36164ca48a190f5468c140d815414)
Signed-off-by: Alex Shi <alex.shi@linaro.org>