ixgbe: support DCB registers dump
Add support for DCB registers dump.
Signed-off-by: Xiaoyun Li <xiaoyun.li@intel.com>
Acked-by: Qi Zhang <qi.z.zhang@intel.com>
Approved by: imp
Obtained from: DPDK (36a036bc6fdd0da74576a39ab74e50954598ba82)
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D31621
(cherry picked from commit 9e65ae746da23e1affdf66adb8944656a9da003c)