check-all-builds.sh: Add host x86_64 build.

This patch updates the check-all-builds.sh to verify that the
host 64-bit OpenSSL build compiles.

The Android/x86_64 one isn't ready because the toolchain under
prebuilts/ doesn't have a sysroot yet, which makes it unusable
without previously generated bionic and a few other things and
have them at a right location.

Same issue with Android/Arm64.

Change-Id: Iba607e0e53bc7553a42bd1f9321d8bab41c8ff4f
1 file changed