klibc: Apply -no-integrated-as on mips/clang
Fixes build error
| /mnt/b/yoe/build/tmp/work/mips32r2-yoe-linux-musl/klibc/2.0.7-r0/klibc-2.0.7/usr/klibc/syscalls.pl: usr/klib
c/syscalls/typesize.bin: magic number not found
...
| usr/klibc/sigsuspend.c:8:10: fatal error: 'klibc/havesyscall.h' file not found
| #include <klibc/havesyscall.h>
| ^~~~~~~~~~~~~~~~~~~~~
| 1 error generated.
Signed-off-by: Khem Raj <raj.khem@gmail.com>
Cc: Andrea Adami <andrea.adami@gmail.com>