Support for NXP's imx SoC common function

This patch adds support for NXP's imx SoC common
function support like topology, gic implementation.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
diff --git a/plat/imx/common/include/plat_imx8.h b/plat/imx/common/include/plat_imx8.h
new file mode 100644
index 0000000..27d4c37
--- /dev/null
+++ b/plat/imx/common/include/plat_imx8.h
@@ -0,0 +1,20 @@
+/*
+ * Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef __PLAT_IMX8_H__
+#define __PLAT_IMX8_H__
+
+#include <gicv3.h>
+
+unsigned int plat_calc_core_pos(uint64_t mpidr);
+void imx_mailbox_init(uintptr_t base_addr);
+void plat_gic_driver_init(void);
+void plat_gic_init(void);
+void plat_gic_cpuif_enable(void);
+void plat_gic_cpuif_disable(void);
+void plat_gic_pcpu_init(void);
+
+#endif /*__PLAT_IMX8_H__ */