Modify code according to new dpdk variable name

Modify code according to new dpdk variable name

Note that most of the original contents of this commit has been removed
from this final patchset, because compatibility issues with DPDK 21.11
have already been addressed, although differently, by these commits:
- b950110: Add initial support for DPDK 21.11
- 5efd9d8: Fix tons of deprecation warnings

Many macros, structure members and dpdk args' name have been changed since
dpdk 21.11 and the current latest version(22.07) still has these changes.
These changes caused the prox compilation to fail. Modify the code so that
prox can be compiled successfully with new dpdk variable name.

Signed-off-by: Long Wu <long.wu@corigine.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Reviewed-by: Chaoyong He <chaoyong.he@corigine.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@corigine.com>
Signed-off-by: Patrice Buriez <patrice.buriez@chenapan.org>
Change-Id: Ibaad7ac00b121ae9b12ed03bd0380400b226e805