Settings: use CMHW serial number for MSim

Change-Id: I2cb7f841699d79259711309fb6fd2de00bc8da75
Fix resource IDs being added to the android namespace

Using @+android:id/some_id will create a new resource ID
with package ID 0x01 rather than 0x7f, for non framework
packages, if "some_id" does not already exist.

Change-Id: I86d57ae6ac88e7dae8420a92e4d55b6c935fd188