clk: qcom: gcc-sm8450: Use floor ops for SDCC RCGs

Use the floor ops to prevent warnings like this at suspend exit and boot:

mmc0: Card appears overclocked; req 800000 Hz, actual 25000000 Hz

Fixes: db0c944e ("clk: qcom: Add clock driver for SM8450")
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Reviewed-by: Vinod Koul <vkoul@kernel.org>
Link: https://lore.kernel.org/r/20230811-topic-8450_clk-v1-1-88031478d548@linaro.org


Signed-off-by: Bjorn Andersson <andersson@kernel.org>