drivers: can: stm32: Change TX priority to chronological order
drivers: can: stm32: Change TX priority to chronological order

This commit changes the TX priority from ID based priority to
chronological order. The advantage is that when messages with
the same ID are sent, the order is retained.

Signed-off-by: Alexander Wachter <ce6e77dabd455f5e273537afd862be63bdedff84@student.tugraz.at>

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