build: move seama commands to image-commands.mk

Move it to image-commands.mk to get rid of duplicate recipes.

Signed-off-by: Mathias Kresin <dev@kresin.me>

include/image-commands.mk

@@ -49,6 +49,18 @@ define Build/eva-image
 	mv $@.new $@
 endef
 
+define Build/seama
+	$(STAGING_DIR_HOST)/bin/seama -i $@ \
+		-m "dev=/dev/mtdblock/$(SEAMA_MTDBLOCK)" -m "type=firmware"
+	mv $@.seama $@
+endef
+
+define Build/seama-seal
+	$(STAGING_DIR_HOST)/bin/seama -i $@ -s $@.seama \
+		-m "signature=$(SEAMA_SIGNATURE)"
+	mv $@.seama $@
+endef
+
 define Build/zyxel-ras-image
 	let \
 		newsize="$(subst k,* 1024,$(RAS_ROOTFS_SIZE))"; \