In order to make TI button interrupt working max98090 codec
Need provide mic bias all the time as long as mic is present
so SHDN and micbias pin are forced on.we also need set max98090
codec bias close or lower than TI bias.We set them in bios/coreboot
kernel reads them from device property
Signed-off-by: NFang, Yang A <yang.a.fang@intel.com>
Signed-off-by: NMark Brown <broonie@kernel.org>