[U-Boot-Users] patch for SMsC 91C96 ethernet driver

hi all,

attached is a patch for lan91c96.c, a network driver apparently only used by the lubbock board and my platform port.

the patch does a variety of things. i'd appreciate feedback, corrections, reports of breakage, etc. i'm also not sure that this is necessarily the "best" solution for some of the problems we had.

- support little-endian mode to push MAC address correctly

- removal of the hard-coded "attribute space" and replacement with a #define constant

- clean up the hardware-init, smc-open, and smc-enable to more closely follow the manual in how to set parameters

- a couple of minor cleanups

-josh