arch/arc: Set the right priority for WDT on quark_se
arch/arc: Set the right priority for WDT on quark_se

ARC has only 2 priorities, 0 or 1. So let's set the right priority for
WDT.

It looks like some commit has changed that, somewhere. And wrong
priorities were lurking around.

Fixes #8096

Signed-off-by: Tomasz Bursztyka <ba81a3a719836727e6857ae83462b9f52ec41006@linux.intel.com>

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