add forgotten changes for the PLEB 2 Board.
Patch from David Snowdon, 13. Aug 2005
diff --git a/Makefile b/Makefile
index 74e9474..4b32253 100644
--- a/Makefile
+++ b/Makefile
@@ -1704,6 +1704,9 @@
 lubbock_config	:	unconfig
 	@./mkconfig $(@:_config=) arm pxa lubbock
 
+pleb2_config	:	unconfig
+	@./mkconfig $(@:_config=) arm pxa pleb2
+
 logodl_config	:	unconfig
 	@./mkconfig $(@:_config=) arm pxa logodl