bootm: Make OS booting dependent on BOOTM

Booting an OS does not require the 'bootm' command, so change the
condition for these options.

Move them into boot/ so they don't depend on CMDLINE

Note that CMD_BOOTM_PRE_LOAD has been put directly into the bootm code
so will need some additional refactoring (and a test!) to allow it to
change over.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
2 files changed