rockchip: rk3288-miqi: Drop USE_PREBOOT Kconfig option

After the migration to use standard boot, storage media devices should
automatically be initialized in the order listed in boot_targets env.

Drop USE_PREBOOT to speed up boot when booting from SD-card or eMMC.

Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
1 file changed