nxp: ddr driver enablement for nxp layerscape soc

DDR driver for NXP layerscape SoC(s):
 - lx2160aqds
 - lx2162aqds
 - lx2160ardb
 - Other Board with SoC(s) like ls1046a, ls1043a etc;
	-- These other boards are not verified yet.

Signed-off-by: Rajesh Bhagat <rajesh.bhagat@nxp.com>
Signed-off-by: York Sun <york.sun@nxp.com>
Signed-off-by: Udit Agarwal <udit.agarwal@nxp.com>
Signed-off-by: Pankaj Gupta <pankaj.gupta@nxp.com>
Change-Id: Ic84a63cb30eba054f432d479862cd4d1097cbbaf
diff --git a/drivers/nxp/ddr/fsl-mmdc/ddr.mk b/drivers/nxp/ddr/fsl-mmdc/ddr.mk
new file mode 100644
index 0000000..e6cc7c1
--- /dev/null
+++ b/drivers/nxp/ddr/fsl-mmdc/ddr.mk
@@ -0,0 +1,19 @@
+#
+# Copyright 2021 NXP
+#
+# SPDX-License-Identifier: BSD-3-Clause
+#
+#-----------------------------------------------------------------------------
+
+# MMDC ddr cntlr driver files
+
+DDR_DRIVERS_PATH	:=	drivers/nxp/ddr
+
+DDR_CNTLR_SOURCES	:=	${DDR_DRIVERS_PATH}/fsl-mmdc/fsl_mmdc.c \
+				${DDR_DRIVERS_PATH}/nxp-ddr/utility.c	\
+				${DDR_DRIVERS_PATH}/nxp-ddr/ddr.c	\
+				${DDR_DRIVERS_PATH}/nxp-ddr/ddrc.c
+
+PLAT_INCLUDES		+=	-I$(DDR_DRIVERS_PATH)/include	\
+				-I$(DDR_DRIVERS_PATH)/fsl-mmdc
+#------------------------------------------------