samples: subsys: usb: hid-mouse: Activate pull on switch pin
samples: subsys: usb: hid-mouse: Activate pull on switch pin

This commit would add the pull-up or pull-down on the switch pin and
makes it functional on the board where there is no external pull-up.

Signed-off-by: Radoslaw Koppel <c53bdb246a28d48215f045abdb12a236ca111a4d@nordicsemi.no>

punitvara/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,GiulianoFranchetto/zephyr,Vudentz/zephyr,GiulianoFranchetto/zephyr,explora26/zephyr,GiulianoFranchetto/zephyr,ldts/zephyr,nashif/zephyr,nashif/zephyr,Vudentz/zephyr,GiulianoFranchetto/zephyr,finikorg/zephyr,explora26/zephyr,ldts/zephyr,ldts/zephyr,GiulianoFranchetto/zephyr,Vudentz/zephyr,punitvara/zephyr,finikorg/zephyr,ldts/zephyr,galak/zephyr,galak/zephyr,nashif/zephyr,galak/zephyr,explora26/zephyr,Vudentz/zephyr,punitvara/zephyr,explora26/zephyr,finikorg/zephyr,nashif/zephyr,ldts/zephyr,Vudentz/zephyr,punitvara/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr,zephyrproject-rtos/zephyr,punitvara/zephyr,finikorg/zephyr,explora26/zephyr,nashif/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,Vudentz/zephyr