android-configure.sh: Add --qemu-prebuilts-dir=<path> option.

This adds a new option to android-configure.sh and android-rebuild.sh
that allows one to automatically prebuilt QEMU binaries under
objs/qemu/<system>/

This is necessary to properly emulate ARM64 system images at the
moment. The QEMU binaries must be rebuilt from the sources found
at https://qemu-android.googlesource.com/qemu-android, using the
'scripts/rebuild.sh' script from
https://qemu-android.googlesource.com/qemu-ranchu

Use the path to your qemu-ranchu checkout after calling
scripts/rebuild.sh successfully as the parameter to
--qemu-prebuilts-dir.

Change-Id: I103d5dd0f250d8a8ef9b269c5fd1d5e76ac1f2c8
1 file changed