drivers: video: ov7670 driver changes in prep for adding OV7675

drivers: video: Restructure OV760.c driver before adding OV7675 support

Modification list to commit made in reverse order:
- update to fix sonar issues 9/26/25
- New issue identified by Sonar fixed - 12:40 PM, 9/25.
- Updated for revisions requested by reviewers (9/25).
- Updated ov7670.c in prep for incorporation of OV7675. See previous PR.

Signed-off-by: Michael Smorto <[email protected]>

Author: mjs513