Rename NotoSansMalayalam fonts to -Regular

This change renames the NotoSansMalayalam and NotoSansMalayalamUI fonts
to the NotoSansMalayalam-Regular (and similarly for UI), to be
consistent with the naming scheme for the Noto fonts in general.

Change-Id: I83e219b8727f9df7d19a2e354469c9ec6c59956f
4 files changed