[U-Boot] granularity of bootm subcommands

[Kumar Gala]

So I proposed a set of subcommands that looked like:

   bootm start <args>
   bootm prep
   bootm load_os
   bootm load_fdt
   bootm load_initrd
   bootm jump
   bootm restore

is this the right granularity or should we go finer?

"prep" could be:

   bootm disable_interrupts
   bootm usb_stop
   bootm disable_caches

"load_os" stays as is.

"load_fdt" could be:

   bootm load_fdt
   bootm boardsetup_fdt
   bootm fdt_resize

"load_initrd" could be:
   bootm load_initrd
   bootm fdt_initrd_fixup

"jump" stays as is.

"restore" could be:
   bootm enable_interrupts
   bootm usb_start
   bootm enable_caches

Also I'm adding in:
   bootm cmdline
   bootm kbd (kernel bd_t)

Finally I'd like to change the subcommands to be prefixed with '_' to  
make parsing easier:
   bootm _start <args>
   bootm _prep
   bootm _load_os
   ...

- k