The rk3288-veyron-speedy-u-boot.dtsi file duplicates the bootphase dts
fragments from rk3288-veyron-u-boot.dtsi even though it #inclues that.
Deduplicate these into the latter file, which should also make the eMMC
available to the other veyron boards' SPL.
Signed-off-by: Alper Nebi Yasak <alpernebiyasak@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Kever Yang <kever.yang@rock-chips.com>