uboot-imx

ARM: uniphier: do not run harmful code for USB boot mode of LD11 ES3

The USB boot without the stand-by MPU is available on ES3 or later
of LD11 SoC, but the code in this if-conditional block must not be
run when booting from USB.  Check if the boot device is USB, and
skip the code in the case.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>