USB: usbip: Update USB/IP OP_REP_IMPORT documentation.

This is to correct the mistaken byte offset of the field bDeviceClass in
OP_REP_IMPORT documentation. The previous field bcdDevice has length 2 and
the offset for bDeviceClass should be 0x138 + 2 = 0x13A instead of 0x139.
Offsets for subsequent fields are also affected and fixed in this patch.

Signed-off-by: Gordon Ou <gordon.xwj@gmail.com>
Reviewed-by: Shuah Khan <skhan@linuxfoundation.org>
Link: https://lore.kernel.org/r/20241224062336.63215-1-gordon.xwj@gmail.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>