It is very useful for user to retrieve cpufreq transtion statistics
and worth to be default enabled.
Signed-off-by: NDong Aisheng <aisheng.dong@nxp.com>
Reviewed-by: NFabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: NShawn Guo <shawnguo@kernel.org>