Add property to define phone type

This value is used as fallback in TelephonyManager

Change-Id: I1df5df66b8cd3de0235e1bbc7d537a17bd39593b
Signed-off-by: Dirk Rettschlag <dirk.rettschlag@gmail.com>

Conflicts:
	configs/cdma.mk
	configs/gsm.mk