pinctrl: samsung: refactor drvdata suspend & resume callbacks

This enables the clk_enable() and clk_disable() logic to be removed
from each callback, but otherwise should have no functional impact.

It is a prepatory patch so that the callbacks can become SoC
specific.

Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Link: https://lore.kernel.org/r/20250402-pinctrl-fltcon-suspend-v6-1-78ce0d4eb30c@linaro.org


Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>