MTP: Use correct return type for getSupportedObjectProperties
MTP: Use correct return type for getSupportedObjectProperties

Change-Id: I6d5bd63fecaa3384dfa1b97dbc0d89ea5668981f
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