ASoC: BYT-maax98090: Enable the PLL interrupt source.

Enable the PLL lock failure interrupt source so that the codec driver
can handle PLL lock failures.

Signed-off-by: Liam Girdwood <liam.r.girdwood@linux.intel.com>
ASoC: Maxim89090: Testing PLL lock irq handler

This is a testing patch to try and recover PLL lock on PLL interrupt.
We now try and toggle the SHDN bit upto 10 times on PLL lock IRQs.
We also check the PLL lock status after every toggle.

TODO: clean up PLL lock code - maybe move to workq. mask IRQs when handler
is running (including jacks) as handler does not seem optimal atm.

Signed-off-by: Liam Girdwood <liam.r.girdwood@linux.intel.com>