SPARC: added SMC91111 driver in and out macros for LEON processors.

SPARC: added SMC91111 driver in and out macros for LEON processors.

This patch makes SPARC/LEON processors able to read and write
to the SMC91111 chip using the chip external I/O bus of the memory
controller. This patchs defines the standard in and out macros
expected by the SMC9111 driver.

To access that I/O bus one must set up the memory controller
(MCTRL or FTMCTRL) correctly. It is assumed that the user sets
up this correctly when the other MCTRL parameters are set up. It
can be set up from the board configuration header file.

Signed-off-by: Daniel Hellstrom <daniel@gaisler.com>
Signed-off-by: Ben Warren <biggerbadderben@gmail.com>