Add tud_sof_cb SOF callback support to VENDOR driver

[JinShil]

Related area

VENDOR Driver

Hardware specification

rp2040, but probably relevant to all

Is your feature request related to a problem?

Yes, I can't seem to be able to handle SOF interrupts using the VENDOR driver.

Describe the solution you'd like

I'd like the tud_sof_cb SOF callback to be called when using the VENDOR driver. It seems one just needs to add function pointer to

tinyusb/src/device/usbd.c

Line 178 in 707a633

.sof = NULL

I have checked existing issues, dicussion and documentation

• I confirm I have checked existing issues, dicussion and documentation.