minijail: Fix issues when compiling for mipsel-o32.

BUG=chromium:358432
TEST=Tested the following:
1. Verify that syslog() uses 'connect' and 'send' syscalls as follows:

    echo 'main() { syslog(0, "test"); }' \
      | mipsel-cros-linux-gnu-gcc -static -o main -xc -
    qemu-mipsel -strace main

2. `emerge-mipsel-o32-geneirc chromeos-minijail`
3. `FEATURES=test emerge-{x86,amd64,arm}-geneirc chromeos-minijail`

Change-Id: I5084f1b8c19d2173bf133fa44210f0637f1d0cc4
Reviewed-on: https://chromium-review.googlesource.com/192603
Reviewed-by: Jorge Lucangeli Obes <jorgelo@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Tested-by: Ben Chan <benchan@chromium.org>
Commit-Queue: Ben Chan <benchan@chromium.org>
2 files changed