Fix spelling of "occurred".

Signed-off-by: Vagrant Cascadian <vagrant@debian.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/usb/gadget/mpc8xx_udc.c b/drivers/usb/gadget/mpc8xx_udc.c
index b3e178a..ad5ea7a 100644
--- a/drivers/usb/gadget/mpc8xx_udc.c
+++ b/drivers/usb/gadget/mpc8xx_udc.c
@@ -170,7 +170,7 @@
 
 /* udc_irq
  *
- * Poll for whatever events may have occured
+ * Poll for whatever events may have occurred
  */
 void udc_irq (void)
 {
diff --git a/drivers/usb/musb/musb_hcd.c b/drivers/usb/musb/musb_hcd.c
index 9a3b61a..4947936 100644
--- a/drivers/usb/musb/musb_hcd.c
+++ b/drivers/usb/musb/musb_hcd.c
@@ -73,9 +73,9 @@
 }
 
 /*
- * This function checks if RxStall has occured on the endpoint. If a RxStall
- * has occured, the RxStall is cleared and 1 is returned. If RxStall has
- * not occured, 0 is returned.
+ * This function checks if RxStall has occurred on the endpoint. If a RxStall
+ * has occurred, the RxStall is cleared and 1 is returned. If RxStall has
+ * not occurred, 0 is returned.
  */
 static u8 check_stall(u8 ep, u8 dir_out)
 {