Escape spaces in the dependency files of packages

- ugh, spaces. escaped them w/ sed.

Change-Id: I9c8230cae8c698bc577a41cff732dfe6d435e125
diff --git a/packages.mk b/packages.mk
index 1fd1da6..b198da3 100644
--- a/packages.mk
+++ b/packages.mk
@@ -57,7 +57,7 @@
 $(PRODUCT_OUT)/.$1-pbuilder: \
 	$(foreach package,$3,$(PRODUCT_OUT)/.$(package)-pbuilder) \
 	$(shell find $(ROOTDIR)/packages/$1 -type f) \
-	$(shell find $(ROOTDIR)/$2 -type f) \
+	$(shell find $(ROOTDIR)/$2 -type f | sed -e 's/ /\\ /g') \
 	| $(ROOTDIR)/cache/base.tgz \
 	$4