linux-phytec-fsl

usb: dwc2: host: add function to compare frame index

This function allow comparing frame index used for
descriptor list which has 64 entries.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>