dts/arm: stm32: Adding rng (Random Number Generator)
dts/arm: stm32: Adding rng (Random Number Generator)

This commit adds rng in stm32f2 dtsi.

Signed-off-by: Krishna Mohan Dani <2f92acbcef6b57b10df043e51f4a57d8454f58b9@hcl.com>

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