uboot-imx

* Patches by Robert Whaley, 29 Nov 2004:
  - update the pxa-regs.h file for PXA27x chips
  - add PXA27x based ADSVIX board
  - add support for MMC on PXA27x processors

* Patch by Andrew E. Mileski, 28 Nov 2004:
  Fix PPC4xx SPD SDRAM detection bug

* Patch by Hiroshi Ito, 26 Nov 2004:
  Fix logic of "test -z" and "test -n" commands