Split the code to enter a state and update the stats into a helper
function, cpuidle_enter_state, and export it. This function will
be called by the coupled state code to handle entering the safe
state and the final coupled state.
Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Tested-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Reviewed-by: Kevin Hilman <khilman@ti.com> Tested-by: Kevin Hilman <khilman@ti.com> Reviewed-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Colin Cross <ccross@android.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>