ARM: dts: omap3-beagle: Add heartbeat and mmc LEDs support

Add the support for D6 and D7 LEDs on Beagle board.
- D6 will be used for heartbeat
- D7 will be used for mmc0

Signed-off-by: Benoit Cousson <b-cousson@ti.com>

arch/arm/boot/dts/omap3-beagle.dts

@@ -24,6 +24,18 @@
 			label = "beagleboard::pmu_stat";
 			gpios = <&twl_gpio 19 0>; /* LEDB */
 		};
+
+		heartbeat {
+			label = "beagleboard::usr0";
+			gpios = <&gpio5 22 0>; /* 150 -> D6 LED */
+			linux,default-trigger = "heartbeat";
+		};
+
+		mmc {
+			label = "beagleboard::usr1";
+			gpios = <&gpio5 21 0>; /* 149 -> D7 LED */
+			linux,default-trigger = "mmc0";
+		};
 	};
 };