driver: entropy: stm32: Fix health dts properties
driver: entropy: stm32: Fix health dts properties

The properties from dts to driver were not translated
correctly from - to _. This PR fixes this

Signed-off-by: Wouter Cappelle <1006c6550378323ba8ab51a729852d7fc61e5400@crodeon.com>

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