Enable SSC function at 50MHz and 100MHz for GL9750 and GL9755. Signed-off-by: Ben Chuang <ben.chuang@genesyslogic.com.tw> Link: https://lore.kernel.org/r/20220119075339.36281-1-benchuanggli@gmail.com Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>