native: ignore format-truncation warnings (REVERTME)
native: ignore format-truncation warnings (REVERTME)

This is enabled by default in GCC 7, disable for now. Tracked in
issue #5732

Signed-off-by: Anas Nashif <0d9952ec84ac43c159f6b7e7ed99a9080c00dd6e@intel.com>

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