ARM: defconfigs: use CONFIG_CPUFREQ_DT

CONFIG_GENERIC_CPUFREQ_CPU0 disappeared with commit bbcf0719
("cpufreq: cpu0: rename driver and internals to 'cpufreq_dt'") and some
defconfigs are still using it instead of the new one.

Use the renamed CONFIG_CPUFREQ_DT generic driver.

Cc: <stable@vger.kernel.org>        # 3.18
Reported-by: NNishanth Menon <nm@ti.com>
Signed-off-by: NViresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: NKevin Hilman <khilman@linaro.org>

arch/arm/configs/multi_v7_defconfig

@@ -445,4 +445,4 @@ CONFIG_DEBUG_FS=y
 CONFIG_MAGIC_SYSRQ=y
 CONFIG_LOCKUP_DETECTOR=y
 CONFIG_CRYPTO_DEV_TEGRA_AES=y
-CONFIG_GENERIC_CPUFREQ_CPU0=y
+CONFIG_CPUFREQ_DT=y

arch/arm/configs/shmobile_defconfig

@@ -176,5 +176,5 @@ CONFIG_CPU_FREQ_GOV_USERSPACE=y
 CONFIG_CPU_FREQ_GOV_ONDEMAND=y
 CONFIG_CPU_FREQ_GOV_CONSERVATIVE=y
 CONFIG_CPU_THERMAL=y
-CONFIG_GENERIC_CPUFREQ_CPU0=y
+CONFIG_CPUFREQ_DT=y
 CONFIG_REGULATOR_DA9210=y