spelling fixes: arch/sh/

Spelling fixes in arch/sh/.

Signed-off-by: Simon Arlott <simon@fire.lp0.eu>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/sh/drivers/dma/dmabrg.c b/arch/sh/drivers/dma/dmabrg.c
index 9d0a293..5e22689 100644
--- a/arch/sh/drivers/dma/dmabrg.c
+++ b/arch/sh/drivers/dma/dmabrg.c
@@ -33,7 +33,7 @@
  *     9      | HAC1/SSI1 | rec | half done    | DMABRGI2
  *
  * all can be enabled/disabled in the DMABRGCR register,
- * as well as checked if they occured.
+ * as well as checked if they occurred.
  *
  * DMABRGI0 services  USB  DMA  Address  errors,  but it still must be
  * enabled/acked in the DMABRGCR register.  USB-DMA complete indicator