This is already included in newer upstream. Needed to build BPF programs
using the MIPS kernel include files.
Without this patch, clang fails with "#error Use a Linux compiler or
give up." in sgidefs.h when building BPF programs.
Signed-off-by: Fredrik Olofsson <fredrik.olofsson@anyfinetworks.com>
(cherry-picked from commit 7d96c301d6)
