build: Add support for Uyghur

Change-Id: I29fe330daa205f800d4de5c92beae39fca44910d
build: Refactor additional languages/locales

Change-Id: Id90911405f98c5e44d1e5faf071135b8fe59925c
languages_full: Remove duplicate Hindi inclusion

Change-Id: If9138e4b8980cacb37a7029ff42822faab63796e

Conflicts:
	target/product/languages_full.mk