uboot-imx

ARM: uniphier: add sg_set_iectrl_range()

For PH1-LD20 or later, per-pin input-enable control is supported,
that is, we need to set-up IECTRL registers for a group of pins.
This helper function will be useful for a bunch of register settings.

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