qlcnic: macros for common register access

Refactor 82xx driver to support new adapter - Qlogic 83XX CNA
Use QLC_SHARED_REG_RD32 and QLC__SHARED_REG_WR32 macros
for 82xx and 83xx common register access.

Signed-off-by: Anirban Chakraborty <anirban.chakraborty@qlogic.com>
Signed-off-by: Sony Chacko <sony.chacko@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>