Enabling seccomp across all processes, rather than just zygote, is
useful for auditing the syscall usage of AOSP. Create a global seccomp
policy that can optionally be enabled by init.
Bug: 37960259
Test: confirm global seccomp by removing finit_module from policy and
observing modprobe fail, confirm regular seccomp unchanged by
comparing length of installed bpf
Change-Id: Iac53a42fa26a80b05126f262dd9525f4f66df558
Test: Make sure arm, x86, x86_64, mips, mips64 emulators boot
Make sure sailfish still boots
Ran CTS test from
https://android-review.googlesource.com/#/c/348671/3 and it passed
The instructions for how to run mips emulators above worked, but
the CTS tests did not seem to actually run.
Change-Id: Iddee5acdb19ed32c7bd4657573313ca439cf6a49
