dt: socfpga: Import and enable Arria V DK DTS

Import DTS for Arria V development kit and enable support
for DT. The DT is imported from Linux 3.19-rc1 as of commit
97bf6af1f928216fd6c5a66e8a57bfa95a659672 .

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <clsee@opensource.altera.com>
Cc: Dinh Nguyen <dinguyen@opensource.altera.com>
Acked-by: Pavel Machek <pavel@denx.de>
Reviewed-by: Stefan Roese <sr@denx.de>
Cc: Vince Bridgers <vbridger@opensource.altera.com>
diff --git a/arch/arm/dts/socfpga_arria5.dtsi b/arch/arm/dts/socfpga_arria5.dtsi
new file mode 100644
index 0000000..5175f03
--- /dev/null
+++ b/arch/arm/dts/socfpga_arria5.dtsi
@@ -0,0 +1,34 @@
+/*
+ *  Copyright (C) 2013 Altera Corporation <www.altera.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+/dts-v1/;
+/* First 4KB has trampoline code for secondary cores. */
+/memreserve/ 0x00000000 0x0001000;
+#include "socfpga.dtsi"
+
+/ {
+	soc {
+		clkmgr@ffd04000 {
+			clocks {
+				osc1 {
+					clock-frequency = <25000000>;
+				};
+			};
+		};
+
+		mmc0: dwmmc0@ff704000 {
+			num-slots = <1>;
+			broken-cd;
+			bus-width = <4>;
+			cap-mmc-highspeed;
+			cap-sd-highspeed;
+		};
+
+		sysmgr@ffd08000 {
+			cpu1-start-addr = <0xffd080c4>;
+		};
+	};
+};