Add $PRODUCT_OUT/ramdisk to installclean

Bug: 79173823
Test: installclean removes this directory
Change-Id: I56dabba29064709112caad6549af7eacbe8469e8
diff --git a/ui/build/cleanbuild.go b/ui/build/cleanbuild.go
index a076b66..4dee638 100644
--- a/ui/build/cleanbuild.go
+++ b/ui/build/cleanbuild.go
@@ -102,6 +102,7 @@
 		productOut("skin"),
 		productOut("obj/NOTICE_FILES"),
 		productOut("obj/PACKAGING"),
+		productOut("ramdisk"),
 		productOut("recovery"),
 		productOut("root"),
 		productOut("system"),