PhoneProxy: On v6 or greater RIL, when LTE_ON_CDMA is TRUE,

always create CDMALTEPhone. Newer phones now have v7 RIL
which needs this to be true also.

Change-Id: Ic69f33a166067a2f77fc48446a361f40ac41e734
Signed-off-by: dhacker29 <davidhackerdvm@gmail.com>