dpdkstat: rework
1) Declaring int i = 0 in for loop
2) Removed -fPIC flag
3) Fixed indentation
4) Changed true and false to yes and no
5) Fixed empty var issue when --with-libdpdk=yes
6) Changed DPDK_LIB to DPDK_EXTRA_LIB (typo)
7) Removed dead code & FOUND_DPDK after AC_MSG_ERROR
8) Changed AC_CHECK_FILE to AC_CHECK_HEADER
9) Restructured DPDK part of configure.ac
10) Add comment explaining no-as-needed flag.
11) Added new if_* types to types.db
12) Updated type & type inst. selection for xstats
Change-Id: I7fb48852d8d0b94b4c67f204f1b1b430681e4509
Signed-off-by: Kim Jones <kim-marie.jones@intel.com>