Use EF_EXT5 as extension for EF_MSISDN on USIM

For USIM applications, use EF_EXT5 as the extension for EF_MSISDN
as per TS 31.102 Section 4.2.37

Conflicts:
	src/java/com/android/internal/telephony/uicc/SIMRecords.java

Change-Id: Ib3bd3d8160d73fcc02b80ef420d8c8f2ffb4992f
CRs-Fixed: 433379