plat-stm32mp2: force CFG_DRIVERS_FIREWALL when supporting RIF controllers

When firewall controllers drivers that implements firewall framework
support are embedded such as RISAB or RIFSC, then CFG_DRIVERS_FIREWALL
should be forced enabled.

Signed-off-by: Gatien Chevallier <gatien.chevallier@foss.st.com>
Reviewed-by: Etienne Carriere <etienne.carriere@foss.st.com>

Author: GseoC

core/arch/arm/plat-stm32mp2/conf.mk

@@ -105,3 +105,6 @@ endif
 
 # Default enable firewall support
 CFG_DRIVERS_FIREWALL ?= y
+ifeq ($(call cfg-one-enabled, CFG_STM32_RISAB CFG_STM32_RIFSC),y)
+$(call force,CFG_DRIVERS_FIREWALL,y)
+endif