Cleanup for submitted patches.

  - Fixes for MPC8266 default config
  - Allow eth_loopback_test() on 8260 to use a subset of the FCC's

  - update README (SHOW_BOOT_PROGRESS values for cmd_nand.c and
    env_common.c)
  - sbc8260 tweaks
  - adjust "help" output

  - fix spelling errors
  - set GD_FLG_DEVINIT flag only after device function pointers
    are valid
  - Allow CFG_ALT_MEMTEST on systems where address zero isn't
    writeable
  - enable 3.rd UART (ST-UART) on PXA(XScale) CPUs
  - trigger watchdog while waiting in serial driver

Minor cleanup of comments

  priority; configure critical interrupts to be handled like external
  interrupts

go back to 66 MHz for stability

  - add description for missing CFG_CMD_* entries in the README file
  - sacsng tweaks:
   include/configs/sacsng.h:
       + Support extra bootp options like: 2nd DNS and send hostname
       + Enabling ping and irq command
       + Adding defines for a bunch of misc configrabled options
         (patches for these options will be coming)
       + Adding watchdog support, but it isn't enabled yet.

   board/sacsng/sacsng.c:

       + Suppressing unneeded output when the quiet environment
	 is non-zero.
       + show_boot_progress() now accepts any negative number as a
	 failure code.
       + show_boot_progress() flashes the error code 5 times, and
         then resets the board to retry the boot from the top

* Patch by Gleb Natapov, 14 Sep 2003:
  enable watchdog support for all MPC824x boards that have a watchdog

  enable watchdog support for all MPC824x boards that have a watchdog

* On MPC5200, restrict FEC to a maximum of 10 Mbps to work around the
  "Non-octet Aligned Frame" errors we see at 100 Mbps

* Patch by Sharad Gupta, 14 Sep 2003:
  fix SPR numbers for upper BAT register ([ID]BAT[4-7][UL])

  update configuration for PPChameleonEVB board

  various changes to VCMA9 board specific files

* Add I2C support for MGT5100 / MPC5200

  Changed default memory option on MPC8266ADS to NOT be Page Based
  Interleave, since this doesn't work very well with the standard
  16MB DIMM

* Patch by George G. Davis, 12 Sep 2003:
  fix Makefile settings for sk98 driver

  add burn-in tests for TRAB board

* Enable instruction cache on MPC5200 board

  - allow for longer timeouts for USB mass storage devices

* Patch by Denis Peter, 11 Sep 2003:
  - fix USB data pointer assignment for bulk only transfer.
  - prevent to display erased directories in FAT filesystem.

* Change output format for NAND flash - make it look like for other
  memory, too