ARM: configs: Enable cpufreq-cpu0 for multi_v7_defconfig

Many boards share the cpufreq-cpu0 driver meaning that if we enable it in
multi_v7_defconfig we can get a reasonable amount of functional utility for
systems and test coverage for a fairly small increase in kernel size.
Signed-off-by: Mark Brown <broonie@kernel.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/arm/configs/multi_v7_defconfig

@@ -413,3 +413,5 @@ CONFIG_DEBUG_FS=y
 CONFIG_MAGIC_SYSRQ=y
 CONFIG_LOCKUP_DETECTOR=y
 CONFIG_CRYPTO_DEV_TEGRA_AES=y
+CONFIG_CPU_FREQ=y
+CONFIG_GENERIC_CPUFREQ_CPU0=y