fix(gicv2): fix SGIR_NSATT bitshift

See https://documentation-service.arm.com/static/5f8ff196f86e16515cdbf969?token=

Fixes: dcb31ff79096fc88b45df8068e5de83b93f833ed

Signed-off-by: Jacob Kroon <jacob.kroon@gmail.com>
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
Change-Id: I79ef17c4538cc3e2d65fedd4dfc2eacf55167bf6
diff --git a/include/drivers/arm/gicv2.h b/include/drivers/arm/gicv2.h
index bebd9ce..c7c441d 100644
--- a/include/drivers/arm/gicv2.h
+++ b/include/drivers/arm/gicv2.h
@@ -51,7 +51,7 @@
 #define SGIR_TGTLSTFLT_MASK	U(0x3)
 #define SGIR_TGTLST_SHIFT	16
 #define SGIR_TGTLST_MASK	U(0xff)
-#define SGIR_NSATT		(U(0x1) << 16)
+#define SGIR_NSATT		(U(0x1) << 15)
 #define SGIR_INTID_MASK		ULL(0xf)
 
 #define SGIR_TGT_SPECIFIC	U(0)