[PATCH] ARM: imx: add necessary interface for pfd

[Shawn Guo]

On Tue, Dec 24, 2013 at 02:05:38PM -0500, Anson Huang wrote:
> Common clk framework will disable unused clks in late init only if
> they are enabled by default and no one is using it, so we need to
> add is_enabled callback for clk framework to get clks' status.
> 
> PFD clocks are enabled by hardware reset, so we need to add
> interface for common clk framework to disable those unused ones for
> saving power.
> 
> Signed-off-by: Anson Huang <b20788 at freescale.com>

Applied, thanks.