net/bnxt: update struct definitions for 1.5.1 HWRM API

net/bnxt: update struct definitions for 1.5.1 HWRM API

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

Structures updated:
hwrm_stat_ctx_alloc_input, hwrm_stat_ctx_alloc_output,
hwrm_stat_ctx_free_input, hwrm_stat_ctx_free_output,
hwrm_stat_ctx_clr_stats_input, hwrm_stat_ctx_clr_stats_output,
hwrm_exec_fwd_resp_input, hwrm_exec_fwd_resp_output

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