feat(gic): add APIs to raise NS and S-EL1 SGIs

This patch adds two helper functions:
 - plat_ic_raise_ns_sgi to raise a NS SGI
 - plat_ic_raise_s_el1_sgi to raise a S-EL1 SGI

Signed-off-by: Florian Lugou <florian.lugou@provenrun.com>
Change-Id: I6f262dd1da1d77fec3f850eb74189e726b8e24da
diff --git a/drivers/arm/gic/v2/gicv2_main.c b/drivers/arm/gic/v2/gicv2_main.c
index 939d097..1925a13 100644
--- a/drivers/arm/gic/v2/gicv2_main.c
+++ b/drivers/arm/gic/v2/gicv2_main.c
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2015-2020, ARM Limited and Contributors. All rights reserved.
+ * Portions copyright (c) 2021-2022, ProvenRun S.A.S. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -417,7 +418,7 @@
  * The proc_num parameter must be the linear index of the target PE in the
  * system.
  ******************************************************************************/
-void gicv2_raise_sgi(int sgi_num, int proc_num)
+void gicv2_raise_sgi(int sgi_num, bool ns, int proc_num)
 {
 	unsigned int sgir_val, target;
 
@@ -437,7 +438,7 @@
 	target = driver_data->target_masks[proc_num];
 	assert(target != 0U);
 
-	sgir_val = GICV2_SGIR_VALUE(SGIR_TGT_SPECIFIC, target, sgi_num);
+	sgir_val = GICV2_SGIR_VALUE(SGIR_TGT_SPECIFIC, target, ns, sgi_num);
 
 	/*
 	 * Ensure that any shared variable updates depending on out of band