soc: st: stm32wba: TF-M does not support BL2 for WBA65x

Enable TFM_BL2_NOT_SUPPORTED configuration for STM32WBA65x SoC since
TF-M does not implement the BL2 boot stage for this SoC series.

Signed-off-by: Etienne Carriere <[email protected]>

Author: etienne-lms

soc/st/stm32/stm32wbax/Kconfig.defconfig.stm32wba65xx

@@ -8,4 +8,7 @@ if SOC_STM32WBA65XX
 config NUM_IRQS
 	default 82
 
+config TFM_BL2_NOT_SUPPORTED
+	default y
+
 endif # SOC_STM32WBA65XX