build: move elx-header into image-commands.mk

ELECOM WAB-I1750-PS will need this in ath79, so move it to common
Makefile.

Signed-off-by: Yanase Yuki <dev@zpc.sakura.ne.jp>

include/image-commands.mk

@@ -167,6 +167,26 @@ define Build/elecom-product-header
 	mv $(fw).new $(fw)
 endef
 
+define Build/elx-header
+	$(eval hw_id=$(word 1,$(1)))
+	$(eval xor_pattern=$(word 2,$(1)))
+	( \
+		echo -ne "\x00\x00\x00\x00\x00\x00\x00\x03" | \
+			dd bs=42 count=1 conv=sync; \
+		hw_id="$(hw_id)"; \
+		echo -ne "\x$${hw_id:0:2}\x$${hw_id:2:2}\x$${hw_id:4:2}\x$${hw_id:6:2}" | \
+			dd bs=20 count=1 conv=sync; \
+		echo -ne "$$(printf '%08x' $$(stat -c%s $@) | fold -s2 | xargs -I {} echo \\x{} | tr -d '\n')" | \
+			dd bs=8 count=1 conv=sync; \
+		echo -ne "$$($(STAGING_DIR_HOST)/bin/mkhash md5 $@ | fold -s2 | xargs -I {} echo \\x{} | tr -d '\n')" | \
+			dd bs=58 count=1 conv=sync; \
+	) > $(KDIR)/tmp/$(DEVICE_NAME).header
+	$(call Build/xor-image,-p $(xor_pattern) -x)
+	cat $(KDIR)/tmp/$(DEVICE_NAME).header $@ > $@.new
+	mv $@.new $@
+	rm -rf $(KDIR)/tmp/$(DEVICE_NAME).header
+endef
+
 define Build/eva-image
 	$(STAGING_DIR_HOST)/bin/lzma2eva $(KERNEL_LOADADDR) $(KERNEL_LOADADDR) $@ $@.new
 	mv $@.new $@

target/linux/ramips/image/Makefile

@@ -35,26 +35,6 @@ define Build/edimax-header
 	@mv $@.new $@
 endef
 
-define Build/elx-header
-	$(eval hw_id=$(word 1,$(1)))
-	$(eval xor_pattern=$(word 2,$(1)))
-	( \
-		echo -ne "\x00\x00\x00\x00\x00\x00\x00\x03" | \
-			dd bs=42 count=1 conv=sync; \
-		hw_id="$(hw_id)"; \
-		echo -ne "\x$${hw_id:0:2}\x$${hw_id:2:2}\x$${hw_id:4:2}\x$${hw_id:6:2}" | \
-			dd bs=20 count=1 conv=sync; \
-		echo -ne "$$(printf '%08x' $$(stat -c%s $@) | fold -s2 | xargs -I {} echo \\x{} | tr -d '\n')" | \
-			dd bs=8 count=1 conv=sync; \
-		echo -ne "$$($(STAGING_DIR_HOST)/bin/mkhash md5 $@ | fold -s2 | xargs -I {} echo \\x{} | tr -d '\n')" | \
-			dd bs=58 count=1 conv=sync; \
-	) > $(KDIR)/tmp/$(DEVICE_NAME).header
-	$(call Build/xor-image,-p $(xor_pattern) -x)
-	cat $(KDIR)/tmp/$(DEVICE_NAME).header $@ > $@.new
-	mv $@.new $@
-	rm -rf $(KDIR)/tmp/$(DEVICE_NAME).header
-endef
-
 define Build/jcg-header
 	$(STAGING_DIR_HOST)/bin/jcgimage -v $(1) \
 		$(if $(JCG_MAXSIZE), -m $$(($(subst k, * 1024,$(JCG_MAXSIZE)))),) \