base: fix constant conflict

There is a conflict 2 media type which shares the same constants which is a DVIX and JPEG.
which causes some app to think jpeg is a dvix video file
It was due to the merge of the qualcomm patches (patch: http://review.cyanogenmod.org/#/c/28960/ ) which was merged on the 23rd

Change-Id: Ida014adab4a954aa81a16d1ff401f9847f87d1a5