Add missing files to Android.bp

common/edits.cpp      : Added by ICU 59
common/icudataver.cpp : Added by ICU 4.4.1
i18n/unumsys.cpp      : Added by 52
i18n/uregion.cpp      : Added by 52

Change-Id: Ic007a09337ffed1b1ad1355a0eb53713bf062238
2 files changed