qlcnic: Refactor initialize nic code path.

o Change function name from qlcnic_83xx_register_nic_idc_func to
  qlcnic_83xx_initialize_nic

Signed-off-by: Sucheta Chakraborty <sucheta.chakraborty@qlogic.com>
Signed-off-by: Manish Chopra <manish.chopra@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>