net/bnxt: add HWRM function reset command

net/bnxt: add HWRM function reset command

Add bnxt_hwrm_func_reset() function and supporting structs and macros.

New HWRM calls:
bnxt_hwrm_func_reset:
	This command puts the function into the reset state.
	In the reset state, global and port related features of the
	chip are not available.

This command resets a hardware function (PCIe function) and
frees any resources used by the function. This command initiated by
the driver prepare the function for re-use. This command may also be
initiated by a driver prior to doing it's own configuration.

Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
Signed-off-by: Stephen Hurd <stephen.hurd@broadcom.com>
Reviewed-by: David Christensen <david.christensen@broadcom.com>