Fractional divider clocks are fairly common. This adds basic
type for them.
Signed-off-by: NHeikki Krogerus <heikki.krogerus@linux.intel.com>
Acked-by: NMike Turquette <mturquette@linaro.org>
Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>