Revert "core_base.mk: switch to new H264 and MPEG2 software codecs"

clang builds fail on the dependent libraries

This reverts commit c628500ca5cfd46152e238e9dc24217a3d08b906.

Change-Id: Ibd4cdce82b890bd3cb9d03a1a1bc0e4fc0e22ee8
1 file changed