boards: arm: nrf9160_pca10090: increase reset line wait time
boards: arm: nrf9160_pca10090: increase reset line wait time

The 1ms wait time has been shown to not be enough. Increasing to 10ms.

This change has been shown to be necessary after
CONFIG_SYS_CLOCK_TICKS_PER_SEC was changed from 128 to 32768
in https://github.com/zephyrproject-rtos/zephyr/pull/16782

Signed-off-by: Sigurd Olav Nevstad <11f9c3e8855a2134ed4007fb961827d02da01b20@nordicsemi.no>

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