Get EID from UiccCard, not UiccSlot

The UiccSlot doesn't hold the EID on HAL 1.2-1.3, instead we get it from
the UiccCard.

Bug: 153019179
Test: builds
Change-Id: Ief890f07958821a877866eacd77ff8160de7b032
Merged-In: Ief890f07958821a877866eacd77ff8160de7b032