Increase scope of ops functions and do some clean up for usage in device
-specific UART drivers.
Remove the static functionality of ops functions and migrate certain macros
to header file for usage in device-specific drivers.
Signed-off-by: Gokul Praveen <g-praveen@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
(cherry picked from commit a9c61ac04f)