driver: i2c: TCA954X: Add support for TCA9548A

Add support for the 8 channels TCA9548A I2C mux.
Added a new binding ti,tca9548a binding inheriting
properties from ti,tca954x-base and defining its own compatibles fields.

Signed-off-by: Aymeric Aillet <aymeric.aillet@iot.bzh>
2 files changed