USB System UI:  Improve message for the "no app for USB accessory" dialog.
USB System UI:  Improve message for the "no app for USB accessory" dialog.

Change-Id: I72bdc3afa152ed7a0e30b1a0e8d9cb2e53ca3f29
Signed-off-by: Mike Lockwood <368d0007e4626f70737d16df5e49ed8806b98c3f@android.com>

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