cpufreq: ARM: Arrange drivers in alphabetical order

Normally we keep drivers in alphabetical inside Kconfig and Makefile and over
time this was broken for ARM cpufreq drivers. Fix it.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Stephen Warren <swarren@nvidia.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>