ASoC: wcd9xxx: Correct RCO enable and disable sequence

Correct RCO enable and disable sequence. Add bandgap
enable before setting RCO and disable bandgap after RCO
is turned off. Also, CLK_MCLK_EN_CTL can not be disabled
once it is set to 1 otherwise the digital state machine
on the codec will go in bad state and thus audio can be
muted.

Change-Id: I42b0da47cd68d9a257d69be244cc4e3d05cd4ea1
Signed-off-by: Phani Kumar Uppalapati <phaniu@codeaurora.org>
1 file changed