wimax/i2400m: add reason argument to i2400m_dev_reset_handle()

In preparation for reset_resume support, in which the same code path
is going to be used, add a diagnostic message to dev_reset_handle()
that can be used to distinguish how the device got there.

This uses the new payload argument added to i2400m_schedule_work() by
the previous commit.

Signed-off-by: Inaky Perez-Gonzalez <inaky@linux.intel.com>
diff --git a/drivers/net/wimax/i2400m/usb-notif.c b/drivers/net/wimax/i2400m/usb-notif.c
index a0751a3..f88d1c6 100644
--- a/drivers/net/wimax/i2400m/usb-notif.c
+++ b/drivers/net/wimax/i2400m/usb-notif.c
@@ -98,7 +98,7 @@
 	}
 	ret = i2400m_is_boot_barker(i2400m, buf, buf_len);
 	if (unlikely(ret >= 0))
-		ret = i2400m_dev_reset_handle(i2400m);
+		ret = i2400m_dev_reset_handle(i2400m, "device rebooted");
 	else	/* Unknown or unexpected data in the notif message */
 		i2400m_unknown_barker(i2400m, buf, buf_len);
 error_bad_size: