usb: fix spelling errors in usb-linux.c

Signed-off-by: Brad Hards <bradh@frogmouth.net>
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
diff --git a/usb-linux.c b/usb-linux.c
index d958853..1f33c2c 100644
--- a/usb-linux.c
+++ b/usb-linux.c
@@ -107,7 +107,7 @@
 /*
  * Control transfer state.
  * Note that 'buffer' _must_ follow 'req' field because
- * we need contigious buffer when we submit control URB.
+ * we need contiguous buffer when we submit control URB.
  */
 struct ctrl_struct {
     uint16_t len;
@@ -580,7 +580,7 @@
     /*
      * Setup ctrl transfer.
      *
-     * s->ctrl is layed out such that data buffer immediately follows
+     * s->ctrl is laid out such that data buffer immediately follows
      * 'req' struct which is exactly what usbdevfs expects.
      */
     urb = &aurb->urb;