4.7-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Linus Walleij <redacted>

commit 2527ecc9195e9c66252af24c4689e8a67cd4ccb9 upstream.

The UserMode (UM) Linux build was failing in gpiolib-of as it requires
ioremap()/iounmap() to exist, which is absent from UM. The non-existence
of IO memory is negatively defined as CONFIG_NO_IOMEM which means we
need to depend on HAS_IOMEM.

Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Reported-by: kbuild test robot <redacted>
Signed-off-by: Linus Walleij <redacted>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/gpio/Kconfig |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig

@@ -50,6 +50,7 @@ config GPIO_DEVRES
 config OF_GPIO
 	def_bool y
 	depends on OF
+	depends on HAS_IOMEM
 
 config GPIO_ACPI
 	def_bool y