build: fix target metadata scan dependencies

Move SCAN_DEPS to scan.mk to eliminate redundancy with scripts/feeds
Add image/*.mk to SCAN_DEPS for targets to pick up newly added devices

Signed-off-by: Felix Fietkau <nbd@nbd.name>

include/scan.mk

@@ -12,6 +12,12 @@ OVERRIDELIST:=$(TMP_DIR)/info/.overrides-$(SCAN_TARGET)-$(SCAN_COOKIE)
 
 export PATH:=$(TOPDIR)/staging_dir/host/bin:$(PATH)
 
+ifeq ($(SCAN_NAME),target)
+  SCAN_DEPS=image/Makefile profiles/*.mk $(TOPDIR)/include/kernel*.mk $(TOPDIR)/include/target.mk image/*.mk
+else
+  SCAN_DEPS=$(TOPDIR)/include/package*.mk
+endif
+
 ifeq ($(IS_TTY),1)
   define progress
 	printf "\033[M\r$(1)" >&2;