dt-bindings: i2c: convert davinci i2c to dt-schema

dt-bindings: i2c: convert davinci i2c to dt-schema

Convert the Texas Instruments DaVinci and Keystone I2C controller
bindings from legacy text format to modern dt-schema (YAML).

During the conversion, the `interrupts` property was made required
to match the strict requirement in the driver probe function. The
custom `ti,has-pfunc` and `power-domains` properties were also
properly defined to match SoC-specific hardware features.

Signed-off-by: Chaitanya Sabnis <chaitanya.msabnis@gmail.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Acked-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
Link: https://lore.kernel.org/r/20260513123758.4955-1-chaitanya.msabnis@gmail.com