Add General Purpose Output (GPO) configuration and driver output
configuration.  The GPOs can be configured as a GPO, IRQ, SDOUT or a
PDMCLK output.  In addition the output drive can be configured with
various configurations.
Signed-off-by: Dan Murphy <dmurphy@ti.com>
Link: https://lore.kernel.org/r/20200728160833.24130-2-dmurphy@ti.comSigned-off-by: Mark Brown <broonie@kernel.org>