This will disable the capability to boot an uploaded image directly,
but keeps other fastboot functionality. This seems like a valid config.

Fixes:
In function `do_bootm_on_complete': undefined reference to `bootm_boot'

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

The Android fastboot protocol Can be used to update firmware and to
issue other lowlevel commands to the bootloader. This adds a
fastboot implementation based on the U-Boot fatboot code.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>