icE1usb fw: Move handling of device-wide request in usb_dev.c

We have upcoming ones not related to the E1 interface, so really
it make more sense to not have those in usb_e1.c

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
Change-Id: I686916bb2b2cb90e94ac9c595deab19f189fcd49
5 files changed