ASoC: imx-rpmsg: Support configure sysclk for codec dai

Some codecs need to configure the sysclk even with slave
mode, otherwise it may not work properly with some case.

wm8960 is the one that need sysclk be configured, so add
late_probe() to call the snd_soc_dai_set_sysclk() of codec

Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Link: https://lore.kernel.org/r/1659495748-10876-1-git-send-email-shengjiu.wang@nxp.com


Signed-off-by: Mark Brown <broonie@kernel.org>