add /vendor support

- add /vendor/lib to front of default library search path
- remove long-obsolete /lib from default library search path

Change-Id: I7d33bf899be018e7cc4c213d5790bbd991023a62
diff --git a/linker/linker.c b/linker/linker.c
index 15a22f8..42a5205 100644
--- a/linker/linker.c
+++ b/linker/linker.c
@@ -606,8 +606,8 @@
 #endif
 
 static const char *sopaths[] = {
+    "/vendor/lib",
     "/system/lib",
-    "/lib",
     0
 };