defconfig: 8226/8610: add cpufreq governers in the defconfig

Currently cpufreq governers are selected in the Kconfig. Since these
config options are not essential to the MSM, it is better to place
them in the defconfig so that they can be selected as per need.

Change-Id: Icead347f4761095e64aefca9a26c926fa5a276b0
Signed-off-by: Syed Rameez Mustafa <rameezmustafa@codeaurora.org>