Show a Toast message if fastcharge is not supported

Change-Id: I6b13c57de117b0284949c74d0899020739a04d69
Signed-off-by: Dirk Rettschlag <dirk.rettschlag@gmail.com>

Conflicts:
	res/values/strings.xml
	src/com/crom/settings/service/ChangeFastChargeStateReceiver.java