ARM: imx: add select on ARCH_MXC for cpufreq support
ARM: imx: add select on ARCH_MXC for cpufreq support

Move ARCH_HAS_CPUFREQ, ARCH_HAS_OPP and PM_OPP on ARCH_MXC so that
the user can enable the cpufreq support for iMX6Q and/or iMX6SL.

Signed-off-by: John Tobias <cac9f603343b06ee1497210745be6022140a594d@gmail.com>
Signed-off-by: Shawn Guo <912cf7eb7d8018e2943586ae6657d21fd4e38239@linaro.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs