subsys: logging: for native_posix use appropriate tracing
subsys: logging: for native_posix use appropriate tracing

For the native_posix backend, use the appropiate tracing
functions and enable color if it should be

Signed-off-by: Alberto Escolar Piedras <52be3174920ed06cbdfbcf9622a1a6c68e942617@oticon.com>

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