arm/dts: omap4: Add entry for OMAP DMIC IP

DMIC IP is used to connect up to 6 digital microphones directly to OMAP.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/boot/dts/omap4.dtsi

@@ -286,5 +286,14 @@ mcpdm: mcpdm@40132000 {
 			interrupt-parent = <&gic>;
 			ti,hwmods = "mcpdm";
 		};
+
+		dmic: dmic@4012e000 {
+			compatible = "ti,omap4-dmic";
+			reg = <0x4012e000 0x7f>, /* MPU private access */
+			      <0x4902e000 0x7f>; /* L3 Interconnect */
+			interrupts = <0 114 0x4>;
+			interrupt-parent = <&gic>;
+			ti,hwmods = "dmic";
+		};
 	};
 };