base

Replaced Lohit_Hindi with Lohit-Devanagari

Lohit-Devanagari is now provided by external/lohit-fonts, replacing
Lohit_Hindi from here. Removed font from fonts.mk and renamed in
fallback_fonts.xml.

Bug: 5364436
Change-Id: I0b8f65dbfdbec1802fba526209d7f88d2cf64fc4