clk: samsung: Pass mask to wait_until_mux_stable()

Make it possible to use wait_until_mux_stable() for MUX registers where
the mask is different from MUX_MASK (e.g. in upcoming CPU clock
implementation for Exynos850).

No functional change.

Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
Link: https://lore.kernel.org/r/20240224202053.25313-12-semen.protsenko@linaro.org


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