ASoC: rt5640: Add the function "get_clk_info" to RL6231 shared support

The patch adds the function "get_clk_info" to RL6231 shared support.

Signed-off-by: Oder Chiou <oder_chiou@realtek.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

diff --cc sound/soc/codecs/rl6231.c
Simple merge

diff --cc sound/soc/codecs/rl6231.h
Simple merge

diff --cc sound/soc/codecs/rt5640.c
Simple merge

diff --cc sound/soc/codecs/rt5645.c
Simple merge

diff --cc sound/soc/codecs/rt5651.c
Simple merge