dts: arm: microchip: Add dtsi entries for PS/2 devices in MEC1501
dts: arm: microchip: Add dtsi entries for PS/2 devices in MEC1501

Create new nodes for PS/2 devices which can be used for
mouse and keyboard

Signed-off-by: Francisco Munoz <bb61d9940d70121d393324718c73fb8bcc0ce7a0@intel.com>

nashif/zephyr,zephyrproject-rtos/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,finikorg/zephyr,nashif/zephyr,galak/zephyr,finikorg/zephyr,finikorg/zephyr,galak/zephyr,galak/zephyr,nashif/zephyr,zephyrproject-rtos/zephyr,Vudentz/zephyr,nashif/zephyr,zephyrproject-rtos/zephyr,zephyrproject-rtos/zephyr,Vudentz/zephyr,galak/zephyr,finikorg/zephyr,nashif/zephyr,finikorg/zephyr,Vudentz/zephyr,Vudentz/zephyr,Vudentz/zephyr,Vudentz/zephyr