or pointer type. So on sparc64 (and maybe others too?) where
bus_space_handle_t is a struct, pass the address of the bus_space_handle_t
and adjust the register access functions accordingly.
While there, slightly optimize the bus_space_* usage in the register
access functions and macros.
byte-order, but FreeBSD's does not. ath(4) expects the FreeBSD
convention. Meet ath(4)'s expectations, use
bus_space_{read,write}_stream_4, instead.
Now, the HAL seems to work on macppc.