ARM: dts: omap4: Add reg-names for McPDM and DMIC

In order to get the memory areas by name when booted with DT.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Benoit Cousson <b-cousson@ti.com>

arch/arm/boot/dts/omap4.dtsi

@@ -273,6 +273,7 @@ mcpdm: mcpdm@40132000 {
 			compatible = "ti,omap4-mcpdm";
 			reg = <0x40132000 0x7f>, /* MPU private access */
 			      <0x49032000 0x7f>; /* L3 Interconnect */
+			reg-names = "mpu", "dma";
 			interrupts = <0 112 0x4>;
 			interrupt-parent = <&gic>;
 			ti,hwmods = "mcpdm";
@@ -282,6 +283,7 @@ dmic: dmic@4012e000 {
 			compatible = "ti,omap4-dmic";
 			reg = <0x4012e000 0x7f>, /* MPU private access */
 			      <0x4902e000 0x7f>; /* L3 Interconnect */
+			reg-names = "mpu", "dma";
 			interrupts = <0 114 0x4>;
 			interrupt-parent = <&gic>;
 			ti,hwmods = "dmic";