video: da8xx-fb: reorganize panel detection
video: da8xx-fb: reorganize panel detection

Move panel detection to a separate function, this helps in readability
as well as makes DT support cleaner.

Signed-off-by: Afzal Mohammed <e2d4496628a80d9d19704e42be4aec0b278f228a@ti.com>
Signed-off-by: Darren Etheridge <2839926fa2e9a42eeb80f80fb95a412789871690@ti.com>
Signed-off-by: Tomi Valkeinen <e1ca4dbb8be1acaf20734fecd2da10ed1d46a9bb@ti.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs