Add target recoveryimage-nodeps.

Change-Id: Ie7d11ae8f40260bf23481931c18523895c87ebd7
diff --git a/core/main.mk b/core/main.mk
index a0a0a59..e613566 100644
--- a/core/main.mk
+++ b/core/main.mk
@@ -79,7 +79,8 @@
     cacheimage-nodeps \
     vendorimage-nodeps \
     ramdisk-nodeps \
-    bootimage-nodeps
+    bootimage-nodeps \
+    recoveryimage-nodeps
 
 ifneq ($(filter $(dont_bother_goals), $(MAKECMDGOALS)),)
 dont_bother := true