net/bnxt: refactor for 1.5.1 HWRM API

net/bnxt: refactor for 1.5.1 HWRM API

Update the PMD to use the 1.5.1 HWRM API.
Most of the changes in this patch and the following patches are
white spaces and rearrangement of the lines - hopefully a onetime change
owing to the usage of a different auto generated file.

Other than that, the following fields have been renamed:
1) rx_err_pkts and tx_err_pkts are now rx_discard_pkts and tx_discard_pkts
in struct ctx_hw_stats64
2) the perm_mac_addr field in the response of bnxt_hwrm_func_qcaps has
changed to mac_addr.

Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com>