gpio: dwapb: enable for Quark

The Intel Quark SoC contains the DW GPIO on board. While fixing the build error
the commit 1972c97d (gpio: dwapb: fix compile errors) disables the
possibility to build the driver on X86, i.e. Intel Quark.

The patch reenables it for Intel Quark as well.

Since we have Intel Quark SoC introduced in 4.0-rc1 I would like to make this
fix available there as well, though the actual MFD driver [1] is applied only
for next version.

[1] https://lkml.org/lkml/2015/2/1/217

Fixes: 1972c97d (gpio: dwapb: fix compile errors)
Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

drivers/gpio/Kconfig

@@ -148,8 +148,7 @@ config GPIO_GENERIC_PLATFORM
 
 config GPIO_DWAPB
 	tristate "Synopsys DesignWare APB GPIO driver"
-	depends on ARM || ARM64
-	depends on OF_GPIO
+	depends on ((ARM || ARM64) && OF_GPIO) || X86_INTEL_QUARK
 	select GPIO_GENERIC
 	select GENERIC_IRQ_CHIP
 	help