include/package.mk: sync default value for hash fallback with mirror hash

Simplifies dealing with PKG_HASH vs PKG_MD5SUM

Signed-off-by: Felix Fietkau <[email protected]>

include/download.mk

@@ -171,7 +171,7 @@ define Download/Defaults
   URL_FILE:=
   PROTO:=
   HASH=$$(MD5SUM)
-  MD5SUM:=
+  MD5SUM:=x
   SUBDIR:=
   MIRROR:=1
   MIRROR_HASH=$$(MIRROR_MD5SUM)

include/package.mk

@@ -11,7 +11,6 @@ all: $(if $(DUMP),dumpinfo,compile)
 
 PKG_BUILD_DIR ?= $(BUILD_DIR)/$(PKG_NAME)$(if $(PKG_VERSION),-$(PKG_VERSION))
 PKG_INSTALL_DIR ?= $(PKG_BUILD_DIR)/ipkg-install
-PKG_MD5SUM ?= unknown
 PKG_BUILD_PARALLEL ?=
 PKG_USE_MIPS16 ?= 1
 PKG_IREMAP ?= 1