Fix no sound hear when one call disconnected.

Reset current activated subscription when call state changed.
CRs-Fixed: 638094

Change-Id: Ie65483a8b2880ae0529a943c6ccb16d0ed9b3b04
InCallUI: Get sim name according to system setting

Only use sim name that is accroding to English.

Get sim name according to system setting

CRs-Fixed: 652237

Change-Id: I75ecf011ff989da9a16f0753876164cc3c61ad8c