stm32: Add FMAC support to Kconfig
stm32: Add FMAC support to Kconfig

This commit adds FMAC HAL and LL drivers to the Kconfig system
Required to enable Filter Math Accelerator (FMAC)
 on STM32G4/H7 devices

Signed-off-by: Tom Owen <3be8e8c6896cdb4e68d3a35b0a6944062255b0c0@zepler.net>

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