The U-Boot binary is not an executable, it is a binary file,
set it's permissions to 0644 instead of 0755.
(From OE-Core rev: b75ef17a7cba1791b077968893ebd4a297547fd1)
Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>