remove reference to Intel with dpdk docs

*Changed configure files to say DPDK instead of Intel DPDK
*Changed rpm and deb config files to say DPDK instead of Intel DPDK
*Changed vnet Makefile to say DPDK instead of Intel DPDK

Change-Id: Ic6e3eacf2341af873d4bd2e036d5afa857ca6355
Signed-off-by: Padraig Connolly <padraig.connolly@intel.com>
diff --git a/vlib/configure.ac b/vlib/configure.ac
index 6aa08f6..f7079e6 100644
--- a/vlib/configure.ac
+++ b/vlib/configure.ac
@@ -6,7 +6,7 @@
 AC_PROG_CC
 
 AC_ARG_WITH(dpdk,
-            AC_HELP_STRING([--with-dpdk],[Use the Intel dpdk]),
+            AC_HELP_STRING([--with-dpdk],[Use DPDK]),
             [with_dpdk=1],
             [with_dpdk=0])