dts: bindings: Add bindings for ARM M33F
dts: bindings: Add bindings for ARM M33F

compatible = "arm,cortex-m33f" was already used for some time
(lpc55S6x, nrf9160...) without any related bindings.
Every works fine until you need to access one CPU node property
(eg. clock-frequency)...

Signed-off-by: Arnaud Mouiche <9e2c54f17da9c3fc8079a0167c791ffaf0fef362@invoxia.com>

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