Add support for settle-time-us property. If this is defined in device
tree then add this delay to mux APIs.

v3->v4:
 - update i2c-mux.yaml by adding required and select properties

v2->v3:
 - move the binding changes into i2c-mux.yaml
 - read at a later point the DT property 'settle-time-us'

v1->v2:
 - add the changes to i2c-mux-gpmux instead of i2c-mux-gpio to be able
   to use mux_control_select_delay

Horatiu Vultur (2):
  dt-bindings: i2c-mux: Add property for settle time
  i2c-mux-gpmux: Support settle-time-us property

 Documentation/devicetree/bindings/i2c/i2c-mux.yaml | 14 ++++++++++++++
 drivers/i2c/muxes/i2c-mux-gpmux.c                  |  4 +++-
 2 files changed, 17 insertions(+), 1 deletion(-)

-- 
2.33.0