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 <[e-mail]>
Reviewed-by: Shuah Khan <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

Documentation/usb/usbip_protocol.rst

···
 +-----------+--------+------------+---------------------------------------------------+
 | 0x138     | 2      |            | bcdDevice                                         |
 +-----------+--------+------------+---------------------------------------------------+
-| 0x139     | 1      |            | bDeviceClass                                      |
+| 0x13A     | 1      |            | bDeviceClass                                      |
 +-----------+--------+------------+---------------------------------------------------+
-| 0x13A     | 1      |            | bDeviceSubClass                                   |
+| 0x13B     | 1      |            | bDeviceSubClass                                   |
 +-----------+--------+------------+---------------------------------------------------+
-| 0x13B     | 1      |            | bDeviceProtocol                                   |
+| 0x13C     | 1      |            | bDeviceProtocol                                   |
 +-----------+--------+------------+---------------------------------------------------+
-| 0x13C     | 1      |            | bConfigurationValue                               |
+| 0x13D     | 1      |            | bConfigurationValue                               |
 +-----------+--------+------------+---------------------------------------------------+
-| 0x13D     | 1      |            | bNumConfigurations                                |
+| 0x13E     | 1      |            | bNumConfigurations                                |
 +-----------+--------+------------+---------------------------------------------------+
-| 0x13E     | 1      |            | bNumInterfaces                                    |
+| 0x13F     | 1      |            | bNumInterfaces                                    |
 +-----------+--------+------------+---------------------------------------------------+
 
 The following four commands have a common basic header called