Fix spelling of "occurred".

Signed-off-by: Vagrant Cascadian <vagrant@debian.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/common/usb_hub.c b/common/usb_hub.c
index e6a2cdb..4f59802 100644
--- a/common/usb_hub.c
+++ b/common/usb_hub.c
@@ -475,7 +475,7 @@
 			return 0;
 
 		/* Otherwise the device will get removed */
-		printf("Port %d over-current occured %d times\n", i + 1,
+		printf("Port %d over-current occurred %d times\n", i + 1,
 		       hub->overcurrent_count[i]);
 	}