cpufreq: imx: Select NVMEM_IMX_OCOTP

When probing cpufreq for iMX6 the values in the efuse needs to be
read which requires NVMEM_IMX_OCOTP. If this option is not enabled,
the probe will be deferred forever and cpufreq won't be available.

This patch forces the selection of the required configuration option.
Signed-off-by: Walter Lozano <walter.lozano@collabora.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

drivers/cpufreq/Kconfig.arm

@@ -94,6 +94,7 @@ config ARM_IMX6Q_CPUFREQ
 	tristate "Freescale i.MX6 cpufreq support"
 	depends on ARCH_MXC
 	depends on REGULATOR_ANATOP
+	select NVMEM_IMX_OCOTP
 	select PM_OPP
 	help
 	  This adds cpufreq driver support for Freescale i.MX6 series SoCs.