ARM: bcm2835: dt: Add Raspberry Pi Model B rev2

This one has an extra P5 header (unpopulated) with I2S.
Signed-off-by: NLubomir Rintel <lkundrak@v3.sk>
Signed-off-by: NEric Anholt <eric@anholt.net>

arch/arm/boot/dts/Makefile

@@ -58,6 +58,7 @@ dtb-$(CONFIG_ARCH_AXXIA) += \
 	axm5516-amarillo.dtb
 dtb-$(CONFIG_ARCH_BCM2835) += \
 	bcm2835-rpi-b.dtb \
+	bcm2835-rpi-b-rev2.dtb \
 	bcm2835-rpi-b-plus.dtb
 dtb-$(CONFIG_ARCH_BCM_5301X) += \
 	bcm4708-asus-rt-ac56u.dtb \

arch/arm/boot/dts/bcm2835-rpi-b-rev2.dts

+/dts-v1/;
+#include "bcm2835-rpi.dtsi"
+
+/ {
+	compatible = "raspberrypi,model-b-rev2", "brcm,bcm2835";
+	model = "Raspberry Pi Model B rev2";
+
+	leds {
+		act {
+			gpios = <&gpio 16 1>;
+		};
+	};
+};
+
+&gpio {
+	pinctrl-0 = <&gpioout &alt0 &i2s_alt2 &alt3>;
+
+	/* I2S interface */
+	i2s_alt2: i2s_alt2 {
+		brcm,pins = <28 29 30 31>;
+		brcm,function = <BCM2835_FSEL_ALT2>;
+	};
+};