Signed-off-by: Wolfgang Denk <wd@denx.de>
Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
This adds required header files for the sandbox architecture, and a basic description of what sandbox is (README.sandbox). Signed-off-by: Simon Glass <sjg@chromium.org>