[merge] Build failure selftest/powerpc/mm/pkey_exec_prot

[Sachin Sant]

pkey_exec_prot test from linuxppc merge branch (3f68564f1f5a) fails to
build due to following error:

gcc -std=gnu99 -O2 -Wall -Werror -DGIT_VERSION='"v5.8-rc7-1276-g3f68564f1f5a"' -I/home/sachin/linux/tools/testing/selftests/powerpc/include  -m64    pkey_exec_prot.c /home/sachin/linux/tools/testing/selftests/kselftest_harness.h /home/sachin/linux/tools/testing/selftests/kselftest.h ../harness.c ../utils.c  -o /home/sachin/linux/tools/testing/selftests/powerpc/mm/pkey_exec_prot
In file included from pkey_exec_prot.c:18:
/home/sachin/linux/tools/testing/selftests/powerpc/include/pkeys.h:34: error: "SYS_pkey_mprotect" redefined [-Werror]
 #define SYS_pkey_mprotect 386
 
In file included from /usr/include/sys/syscall.h:31,
                 from /home/sachin/linux/tools/testing/selftests/powerpc/include/utils.h:47,
                 from /home/sachin/linux/tools/testing/selftests/powerpc/include/pkeys.h:12,
                 from pkey_exec_prot.c:18:
/usr/include/bits/syscall.h:1583: note: this is the location of the previous definition
 # define SYS_pkey_mprotect __NR_pkey_mprotect

commit 128d3d021007 introduced this error.
selftests/powerpc: Move pkey helpers to headers

Possibly the # defines for sys calls can be retained in pkey_exec_prot.c or


Thanks
-Sachin