tree fb247c1bfd8287336b504ee7616038ca7c19994e
parent b1b71cd003444850300a961f52a0ac3dcdaf25e6
author huang lin <hl@rock-chips.com> 1447741225 +0800
committer Simon Glass <sjg@chromium.org> 1448982442 -0700

rockchip: add early uart driver

add early uart driver so we can print debug message in
SPL stage

Signed-off-by: Lin Huang <hl@rock-chips.com>
Acked-by: Simon Glass <sjg@chromium.org>