clk: Use generic CCF ops where possible

clk: Use generic CCF ops where possible

This converts most CCF drivers to use generic ops. imx6q is the only
outlier, where we retain the existing functionality by moving the check to
request().

Signed-off-by: Sean Anderson <[email protected]>
Reviewed-by: Claudiu Beznea <[email protected]>
Reviewed-by: Peng Fan <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
[ fixed missing include for at91 ]
Signed-off-by: Sean Anderson <[email protected]>