The whole menu is guarded by

  menu "Pin controllers"
          depends on PINCTRL
      ...
  endmenu

The if conditional outside of it is redundant.
Signed-off-by: NMasahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>