west: updated west.yml to grab ke15z Pinctrl definitions

Updated the west.yml file to add pinctrl support
required for the frdm_ke15z board.

Signed-off-by: Emilio Benavente <emilio.benavente@nxp.com>
Signed-off-by: Pavel Krenek <pavel.krenek@nxp.com>
1 file changed