linux-imx

usb: dwc3: of-simple: Convert to bulk clk API

Now that the bulk API has a "get all of the clocks" helper to match
what this code wants, there's little reason not to switch over.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>