dt-bindings: hwmon: add microchip,emc2305.yaml dt binding description.

dt-bindings: hwmon: add microchip,emc2305.yaml dt binding description.

Submitted to linux-hwmon mailing list at
https://patchwork.kernel.org/project/linux-hwmon/patch/20220430114905.53448-3-michaelsh@nvidia.com/

Add basic description of emc2305 driver device tree binding.

Signed-off-by: Michael Shych <michaelsh@nvidia.com>
Reviewed-by: Vadim Pasternak <vadimp@nvidia.com>
dtbindings: Fixup microchip,emc2305.yaml bindings

The bindings submitted to mainline had some issues, so fix them up.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>