[source] ramips: build HuaWei HG255D image

[LEDE Commits]

mkresin pushed a commit to source.git, branch master:
https://git.lede-project.org/afc1ccf955378cd8ab7c4b299a496054d1ddb14f

commit afc1ccf955378cd8ab7c4b299a496054d1ddb14f
Author: Mathias Kresin <dev at kresin.me>
AuthorDate: Mon Jul 31 20:19:14 2017 +0200

    ramips: build HuaWei HG255D image
    
    The code to build an image was disabled some time ago for unknown
    reasons albeit the image looks fine.
    
    Signed-off-by: Mathias Kresin <dev at kresin.me>
---
 target/linux/ramips/image/rt305x.mk | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/target/linux/ramips/image/rt305x.mk b/target/linux/ramips/image/rt305x.mk
index 628b84b..f82397d 100644
--- a/target/linux/ramips/image/rt305x.mk
+++ b/target/linux/ramips/image/rt305x.mk
@@ -345,6 +345,13 @@ define Device/freestation5
 endef
 TARGET_DEVICES += freestation5
 
+define Device/hg255d
+  DTS := HG255D
+  IMAGE_SIZE := $(ralink_default_fw_size_16M)
+  DEVICE_TITLE := HuaWei HG255D
+endef
+TARGET_DEVICES += hg255d
+
 define Device/hlk-rm04
   DTS := HLKRM04
   IMAGES += factory.bin