tree f8a879fe2edc988c8666c16b8fd27000ae3cd0a0
parent ce22e11274d8979228039b1bf71e2ad72a946bf8
author Jordan Liu <jminjie@google.com> 1557185907 -0700
committer Jordan Liu <jminjie@google.com> 1557185907 -0700

Update getCardId doc with details

getCardId() returns the EID in some cases and ICCID in others. Add
comments explaining exactly when it returns what.

Test: no change in behavior
Bug: 131423779
Change-Id: Id0cbae3affdf4c034b2435bf77371ae1355d3cfa