pinctrl: ocelot: Add dependency on HAS_IOMEM

As usual the build fails on UM Linux because that thing does
not have IOMEM. Depend on HAS_IOMEM solves the build problem.

Cc: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/Kconfig

@@ -352,6 +352,7 @@ config PINCTRL_RK805
 config PINCTRL_OCELOT
 	bool "Pinctrl driver for the Microsemi Ocelot and Jaguar2 SoCs"
 	depends on OF
+	depends on HAS_IOMEM
 	select GPIOLIB
 	select GPIOLIB_IRQCHIP
 	select GENERIC_PINCONF