Input: mt6779-keypad - use devm_clk_get_enabled()

Switch to using devm_clk_get_enable() helper instead of acquiring the
clock with devm_clk_get(), enabling it, and defining and installing
a custom devm action to call clk_disable().

Reviewed-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
Link: https://lore.kernel.org/r/Zs4UWGKt3hLjNmoP@google.com


Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>