[U-Boot] SPL Framework: Add support for U_BOOT_CMD

[Scott Wood]

On 01/25/2012 12:19 PM, Tom Rini wrote:
> Maybe we should poke <command.h> to nop out U_BOOT_CMD for
> CONFIG_SPL_BUILD?  OTOH, #ifndef'ing U_BOOT_CMD and the code itself
> gets us a space savings we wouldn't get otherwise (I suspect giving
> the MTD/NAND issue I've mentioned before)...

Commands should be stripped out already with the new SPL -- that's what
the (unfortunately uncommented) sed command in GEN_UBOOT appears to be
doing.

-Scott