[PATCH] build: undefine "mips" to prevent build problems for MIPS targets

[PATCH] build: undefine "mips" to prevent build problems for MIPS targets

It turns out that the MIPS GCC compiler defines a "mips" cpp macro
which was resulting in build failures on MIPS so we need to
undefine the "mips" macro during build.  As this should be safe
to do in all architectures, just add it to the compiler flags by
default.

This was reported in the following GH issue:
* https://github.com/seccomp/libseccomp/issues/274

Reported-by: Rongwei Zhang <pudh4418@gmail.com>
Suggested-by: Rongwei Zhang <pudh4418@gmail.com>
Acked-by: Tom Hromatka <tom.hromatka@oracle.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
(imported from commit 5cd9059618a0810ee47c21e6b44c5a876b75e23d)

Gbp-Pq: Name build_undefine_mips_to_prevent_build_problems.patch