bmips: shg2500: add BCM4360 fallback SPROM

Apart from the embedded BCM63268 wireless, this device has an external BCM4360
connected by PCIe which needs a fallback SPROM.
b43 isn't enabled for this device because BCM4360 isn't supported (AC PHY).

Signed-off-by: Álvaro Fernández Rojas <[email protected]>

target/linux/bmips/dts/bcm63168-sercomm-shg2500.dts

@@ -43,6 +43,19 @@
 			debounce-interval = <60>;
 		};
 	};
+
+	bcm4360-sprom {
+		compatible = "brcm,bcma-sprom";
+
+		pci-bus = <1>;
+		pci-dev = <0>;
+
+		nvmem-cells = <&macaddr_cferom_6a0>;
+		nvmem-cell-names = "mac-address";
+		mac-address-increment = <1>;
+
+		brcm,sprom = "brcm/bcm4360-sprom.bin";
+	};
 };
 
 &ehci {

target/linux/bmips/image/bcm63268.mk

@@ -73,8 +73,9 @@ define Device/sercomm_shg2500
   PAGESIZE := 2048
   SUBPAGESIZE := 512
   VID_HDR_OFFSET := 2048
-  DEVICE_PACKAGES += $(USB2_PACKAGES) kmod-i2c-gpio \
-    kmod-leds-sercomm-msp430
+  DEVICE_PACKAGES += $(USB2_PACKAGES) \
+    broadcom-4360-sprom \
+    kmod-i2c-gpio kmod-leds-sercomm-msp430
   SERCOMM_FSVER := 1001
   SERCOMM_HWVER := 1424e4a
   SERCOMM_SWVER := 3207