staging: usbip: userspace: usbip: modify `list' help message

The remote devices listed are, technically, exportable and not
necessarily exported.

Signed-off-by: matt mooney <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/staging/usbip/userspace/src/usbip.c

···
 	{
 		.name  = "list",
 		.fn    = usbip_list,
-		.help  = "List exported or local USB devices",
+		.help  = "List exportable or local USB devices",
 		.usage = usbip_list_usage
 	},
 	{

drivers/staging/usbip/userspace/src/usbip_list.c

···
 static const char usbip_list_usage_string[] =
 	"usbip list [-p|--parsable] <args>\n"
 	"    -p, --parsable         Parsable list format\n"
-	"    -r, --remote=<host>    List the exported USB devices on <host>\n"
+	"    -r, --remote=<host>    List the exportable USB devices on <host>\n"
 	"    -l, --local            List the local USB devices\n";
 
 void usbip_list_usage(void)