usb: driver: Fix Nordic driver for fragmented control OUT transfers.

Nordic driver must allow read from control OUT endpoint by
itself. For data stage transactions with length > MPS (64Bytes)
this must be performed for each 64B + Residue data packet.

Residue - data packet with len < 64B.

The exact length of data transfer is known from wLength field
form setup packet in setup stage. Until now driver was incorrectly
initializing the length of the data stage and at some point will
not allow for next data stage.

This commit addresses the issue #23980.

Signed-off-by: Emil Obalski <emil.obalski@nordicsemi.no>