stm32mp1: add TZC400 interrupt management

TZC400 is configured to raise an interrupt in case of faulty access.
Call the new added tzc400_it_handler, in case this interrupt occurs.

Change-Id: Iaf4fa408a8eff99498042e11e2d6177bad39868c
Signed-off-by: Yann Gautier <yann.gautier@st.com>

plat/st/stm32mp1/sp_min/sp_min_setup.c

 /*
- * Copyright (c) 2015-2019, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2015-2021, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -45,7 +45,7 @@ void sp_min_plat_fiq_handler(uint32_t id)
 {
 	switch (id & INT_ID_MASK) {
 	case STM32MP1_IRQ_TZC400:
-		ERROR("STM32MP1_IRQ_TZC400 generated\n");
+		(void)tzc400_it_handler();
 		panic();
 		break;
 	case STM32MP1_IRQ_AXIERRIRQ:

plat/st/stm32mp1/stm32mp1_security.c

 /*
- * Copyright (c) 2015-2020, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2015-2021, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -75,8 +75,7 @@ static void init_tzc400(void)
 				TZC_REGION_NSEC_ALL_ACCESS_RDWR);
 #endif
 
-	/* Raise an exception if a NS device tries to access secure memory */
-	tzc400_set_action(TZC_ACTION_ERR);
+	tzc400_set_action(TZC_ACTION_INT);
 
 	tzc400_enable_filters();
 }