base-files: use $(COMMITCOUNT) in PKG_RELEASE

The newly added `$(COMMITCOUNT)` varialbe allows automatic versioning
based on the number of Git commits of a package. Replace *tedious to
bump* and *merge conflict causing* `PKG_RELEASE` and replace it with
`$(COMMITCOUNT)`.

Signed-off-by: Paul Spooren <[email protected]>

package/base-files/Makefile

@@ -12,8 +12,8 @@ include $(INCLUDE_DIR)/version.mk
 include $(INCLUDE_DIR)/feeds.mk
 
 PKG_NAME:=base-files
-PKG_RELEASE:=246
 PKG_FLAGS:=nonshared
+PKG_RELEASE:=$(COMMITCOUNT)
 
 PKG_FILE_DEPENDS:=$(PLATFORM_DIR)/ $(GENERIC_PLATFORM_DIR)/base-files/
 PKG_BUILD_DEPENDS:=usign/host ucert/host