pinctrl: pistachio: fix mfio pll_lock pinmux

commit a32ac291 upstream.

A previous patch attempted to fix the pinmuxes for mfio 84 - 89, but it
omitted a change to pistachio_pin_group pistachio_groups, which results
in incorrect pll_lock signals being routed.

Apply the correct mux settings throughout the driver.

fixes: cefc03e5 ("pinctrl: Add Pistachio SoC pin control driver")
fixes: e9adb336 ("pinctrl: pistachio: fix mfio84-89 function description and pinmux.")
Signed-off-by: James Hartley <james.hartley@imgtec.com>
Reviewed-by: Sifan Naeem <Sifan.Naeem@imgtec.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>