Move IccUtils to reflect Java package declaration.

This class was in com/android/internal/telephony but declared itself
in com.android.internal.telephony.uicc. Mismatches here make IDEs
unhappy when resolving imports, and only the latter is used in
compilation, so consolidate on the latter.

Test: N/A (will rely on TreeHugger)
Change-Id: I598341bacbd70947b6e2789b2e543879cd41a4c9