ARM: imx: enable cpufreq for imx6q

It enables cpufreq support for imx6q with generic cpufreq-cpu0 driver.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig
index f1bf610..01bf72c 100644
--- a/arch/arm/mach-imx/Kconfig
+++ b/arch/arm/mach-imx/Kconfig
@@ -829,6 +829,8 @@
 
 config SOC_IMX6Q
 	bool "i.MX6 Quad support"
+	select ARCH_HAS_CPUFREQ
+	select ARCH_HAS_OPP
 	select ARM_CPU_SUSPEND if PM
 	select ARM_GIC
 	select COMMON_CLK
@@ -841,6 +843,7 @@
 	select MFD_SYSCON
 	select PINCTRL
 	select PINCTRL_IMX6Q
+	select PM_OPP if PM
 
 	help
 	  This enables support for Freescale i.MX6 Quad processor.