HTCQualcommRIL: CDMA Subscription: allow forced RUIM subscription

Ability to set ro.telephony.ril.v3=force_ruim_sub property to force
RUIM subscription mode (e.g. instead of NV).

Change-Id: I9b82bbb0b71ba15952ad33f777105d96b5b8fe48
WIP: interpret IccCard status

Change-Id: I297286ca95129b75461079109a0b0690a1fe395e