arch: x86: Make tag name unique
arch: x86: Make tag name unique

Renaming a variable to not clash with a struct name.

MISRA-C rule 5.7

Signed-off-by: Flavio Ceolin <979b9165500b0741b9d0500e2efd74fc1547bff7@intel.com>

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