Revert "s3cfb: tl2796: do not read calibration data on aries"

This reverts commit 2e94007a1fd5c0da306d677a7f3a108f4e9f0917.
s3cfb: tl2796: detect invalid factory calibration data

When an invalid factory calibration data is detected, use some sane
defaults.

Change-Id: I0095e1a4f530e61bb4f53a3aeed3fb4c01ea4e22