bcm63xx: ad1018: support Sercomm factory images

This images can be flashed from the official firmware, as opposed to CFE
images, which can only be flashed from CFE and require opening the case.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

target/linux/bcm63xx/image/bcm63xx_nand.mk

@@ -121,7 +121,7 @@ TARGET_DEVICES += netgear_dgnd3700-v2
 
 ### Sercomm ###
 define Device/sercomm_ad1018
-  $(Device/bcm63xx-nand)
+  $(Device/sercomm-nand)
   IMAGE/cfe.bin := append-kernel | pad-to $$$$(KERNEL_SIZE) | ad1018-jffs2-cferam | append-ubi | cfe-wfi-tag
   DEVICE_VENDOR := Sercomm
   DEVICE_MODEL := AD1018
@@ -134,5 +134,15 @@ define Device/sercomm_ad1018
   VID_HDR_OFFSET := 2048
   DEVICE_PACKAGES += $(B43_PACKAGES) $(USB2_PACKAGES)
   CFE_WFI_FLASH_TYPE := 3
+  SERCOMM_PID := \
+    30 30 30 30 30 30 30 31 34 31 35 31 35 33 30 30 \
+    30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 \
+    30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 \
+    30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 \
+    30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 \
+    30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 \
+    30 30 30 30 33 30 31 33 30 30 30 30 30 30 30 30 \
+    0D 0A 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+  SERCOMM_VERSION := 1001
 endef
 TARGET_DEVICES += sercomm_ad1018