Support for SEEK on Android.

Support for following apis have been added:
1. exchangeApdu()
2. openLogicalChannel()
3. closeLogicalChannel()
4. getAtr()

Conflicts:
	src/java/com/android/internal/telephony/sip/SipCommandInterface.java
	src/java/com/android/internal/telephony/test/SimulatedCommands.java

Change-Id: I267d0d6fd229f20671411b130f7654ee705f14ca