video: da8xx-fb: make clock naming consistent
video: da8xx-fb: make clock naming consistent

Clean up the code, so that the names of the various clock variables
are consistent to it is clear what variable is associated with what
clock.

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