ARM: EXYNOS: Select PINCTRL_EXYNOS for exynos4/5 at chip level

Previously if you had MACH_EXYNOS5_DT but not MACH_EXYNOS4_DT you'd be
missing the pincontrol definitions.  Move PINCTRL selects to the arch
level since we should be enabling the code for all exynos variants.

Update the PINCTRL descriptions to indicate that PINCTRL_EXYNOS is not
for exynos5440.  Also add basic dependencies for the PINCTRL_EXYNOS
kernel config.

Signed-off-by: Doug Anderson <dianders@chromium.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
diff --git a/drivers/pinctrl/Kconfig b/drivers/pinctrl/Kconfig
index 8f66924..a1c6dd3 100644
--- a/drivers/pinctrl/Kconfig
+++ b/drivers/pinctrl/Kconfig
@@ -207,12 +207,13 @@
 	select PINCONF
 
 config PINCTRL_EXYNOS
-	bool "Pinctrl driver data for Samsung EXYNOS SoCs"
-	depends on OF && GPIOLIB
+	bool "Pinctrl driver data for Samsung EXYNOS SoCs other than 5440"
+	depends on OF && GPIOLIB && ARCH_EXYNOS
 	select PINCTRL_SAMSUNG
 
 config PINCTRL_EXYNOS5440
 	bool "Samsung EXYNOS5440 SoC pinctrl driver"
+	depends on SOC_EXYNOS5440
 	select PINMUX
 	select PINCONF