Resolve "unused DT entry" warnings for DT_VERNEED and DT_VERNEEDNUM.

Change-Id: Id18310811a6d183878a1d4d26cc2498f4fd00c55
Signed-off-by: Alexander Ivchenko <alexander.ivchenko@intel.com>
diff --git a/linker/linker.cpp b/linker/linker.cpp
index 1d68db5..902584a 100644
--- a/linker/linker.cpp
+++ b/linker/linker.cpp
@@ -2370,6 +2370,8 @@
       case DT_VERSYM:
       case DT_VERDEF:
       case DT_VERDEFNUM:
+      case DT_VERNEED:
+      case DT_VERNEEDNUM:
         break;
 
       default: