ASoC: rl6231: Add new supports on rl6231

1. Increases the max limit of PLL input frequency
   on RL6231 shared support.
2. Add a new pll preset map.

Signed-off-by: Derek Fang <derek.fang@realtek.com>
Link: https://lore.kernel.org/r/1580970133-14089-1-git-send-email-derek.fang@realtek.com


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