Update dac drivers to use DT_HAS_<compat>_ENABLED Kconfig symbol
to expose the driver and enable it by default based on devicetree.
We remove 'depend on' Kconfig for symbols that would be implied by
the devicetree node existing.
Signed-off-by: Martin Jäger <martin@libre.solar>
Since this DAC is connected via SPI bus the init priority
value must be higher than the default 50 so it can be initialized
later than the bus itself so add a dedicated init config
symbol for that.
Signed-off-by: Bartosz Bilas <b.bilas@grinn-global.com>
Refactors all of the DAC drivers to use a shared driver class
initialization priority configuration, CONFIG_DAC_INIT_PRIORITY, to
allow configuring DAC drivers separately from other devices. This is
similar to other driver classes like I2C and SPI.
The default is set to CONFIG_KERNEL_INIT_PRIORITY_DEVICE to preserve the
existing default initialization priority for most drivers. The
exceptions are dacx0508, dacx3608, and mcp4725 drivers which have
dependencies on SPI or I2C drivers and must therefore initialize later
than the default device priority.
Signed-off-by: Maureen Helm <maureen.helm@intel.com>
