Use 0 compression when creating the target_files package

The zip file under $OUT/obj/PACKAGING/target_files_intermediate
is used for final package creation,
and it's being unzipped multiple times by releasetools.

(Not to mention that it also takes an awful lot of time
just to zip it initially.)

Using 0 compression on it reduces the build time by several minutes.

The final zip package is untouched by this change(remains compressed).

Change-Id: Ic38b470f97f1e0ebb80da9d4f7750e4ccf53e05c
Signed-off-by: Park Ju Hyung <[email protected]>

core/Makefile

@@ -6177,7 +6177,7 @@ endif
 	@# help early validation of the .zip file while uploading it.
 	$(hide) find $(zip_root)/META | sort >[email protected]
 	$(hide) find $(zip_root) -path $(zip_root)/META -prune -o -print | sort >>[email protected]
-	$(hide) $(SOONG_ZIP) -d -o $@ -C $(zip_root) -r [email protected]
+	$(hide) $(SOONG_ZIP) -L 0 -d -o $@ -C $(zip_root) -r [email protected]
 
 .PHONY: target-files-package
 target-files-package: $(BUILT_TARGET_FILES_PACKAGE)