nxp: platform files for bl2 and bl31 setup

For NXP platforms:
- Setup files for BL2 and BL31
- Other supporting files.

Signed-off-by: Pankaj Gupta <pankaj.gupta@nxp.com>
Change-Id: I36a1183a0652701bdede9e02d41eb976accbb017
diff --git a/plat/nxp/common/setup/include/ls_interrupt_mgmt.h b/plat/nxp/common/setup/include/ls_interrupt_mgmt.h
new file mode 100644
index 0000000..7dbddfb
--- /dev/null
+++ b/plat/nxp/common/setup/include/ls_interrupt_mgmt.h
@@ -0,0 +1,23 @@
+/*
+ * Copyright 2020 NXP
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ */
+
+#ifndef LS_EL3_INTRPT_MGMT_H
+#define LS_EL3_INTRPT_MGMT_H
+
+#include <bl31/interrupt_mgmt.h>
+
+#define MAX_INTR_EL3		128
+
+/*
+ * Register handler to specific GIC entrance
+ * for INTR_TYPE_EL3 type of interrupt
+ */
+int request_intr_type_el3(uint32_t id, interrupt_type_handler_t handler);
+
+void ls_el3_interrupt_config(void);
+
+#endif	/*	LS_EL3_INTRPT_MGMT_H	*/