Revert "Revert "Added sahlnaskh arabic font to Android.mk & fonts.mk files to actually get the font installed""

This reverts commit b56d087775917636f4779068f9580952c7a97bed.

Change-Id: I8507ebd06088d66c8cce43dda97deae04221bd5f
Merge "Revert "Revert "Added sahlnaskh arabic font to Android.mk & fonts.mk files to actually get the font installed""" into kitkat