Add support pretty printer for the registers of hns3 driver.
This printer supports PF and VF, and is compatible with hns3
drivers of earlier versions.
Sample output:
$ ethtool -d eth1
[cmdq_regs]
comm_nic_csq_baseaddr_l : 0x48168000
comm_nic_csq_baseaddr_h : 0x00000000
comm_nic_csq_depth : 0x00000080
comm_nic_csq_tail : 0x00000050
comm_nic_csq_head : 0x00000050
comm_nic_crq_baseaddr_l : 0x48170000
comm_nic_crq_baseaddr_h : 0x00000000
comm_nic_crq_depth : 0x00000080
comm_nic_crq_tail : 0x00000000
comm_nic_crq_head : 0x00000000
comm_vector0_cmdq_src : 0x00000000
comm_cmdq_intr_sts : 0x00000000
comm_cmdq_intr_en : 0x00000002
comm_cmdq_intr_gen : 0x00000000
[common_regs]
misc_vector_base : 0x00000001
pf_other_int : 0x00000040
misc_reset_sts : 0x00000000
misc_vector_int_sts : 0x00000000
global_reset : 0x00000000
fun_rst_ing : 0x00000000
gro_en : 0x00000001
...