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

This reverts commit a06d5a9007515be5a1275174c9db03efa9963da7.

Change-Id: I77b9ab806ef3a6601041c49fd561c6fcdeb085ba
Merge "Revert "Revert "Added sahlnaskh arabic font to Android.mk & fonts.mk files to actually get the font installed""" into kitkat-caf