ARM: omap2plus_defconfig: Enable support for ti-cpufreq

AM335x, AM437x, DRA7xx, and AM57xx platforms all now depend on
ti-cpufreq driver to enable proper OPPs for use with cpufreq, so
enable the same.
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
Reviewed-by: Lukasz Majewski <lukma@denx.de>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/configs/omap2plus_defconfig

@@ -64,6 +64,7 @@ CONFIG_CPU_FREQ_GOV_POWERSAVE=y
 CONFIG_CPU_FREQ_GOV_USERSPACE=y
 CONFIG_CPU_FREQ_GOV_CONSERVATIVE=y
 CONFIG_CPUFREQ_DT=m
+CONFIG_ARM_TI_CPUFREQ=y
 # CONFIG_ARM_OMAP2PLUS_CPUFREQ is not set
 CONFIG_CPU_IDLE=y
 CONFIG_BINFMT_MISC=y