Run device-specific tasks at the end of Makefile.
Run device-specific tasks at the end of Makefile.

This allows us to add device-specific tasks.

Bug: 17406520
Change-Id: If23a6d530104a8dc3eeaf8215d8d41a6847f4645

xorware/android_build,xorware/android_build,xorware/android_build,xorware/android_build,xorware/android_build