gta4xl-common: Update blobs from P610XXU2EVG7

The Widevine DRM blobs are pinned to be kept the same, and also as they
are in Samsung's P610XXU2EVE5 firmware, as for some reason, in the
P610XXU2EVG7 firmware, despite it being newer, it has Widevine 1.3
blobs, rather than 1.4 blobs.

Also, correct the comment for the MFC (Multi-Format Codec) firmware in
proprietary-files.txt.

Change-Id: Icfd9857d30c9f2e5868c59adffd1ff92780c8494
2 files changed