Make the systemui process persistent.
Make the systemui process persistent.

This ensures that the system won't kill it for memory,
the user can't stop services inside of it, etc.

Change-Id: I923c376afa1133bccc000253f5bba851f9119a52

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base