[POWERPC] Spelling fixes: arch/ppc/

Spelling fixes in arch/ppc/.

Signed-off-by: Simon Arlott <simon@fire.lp0.eu>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/arch/ppc/syslib/ppc4xx_dma.c b/arch/ppc/syslib/ppc4xx_dma.c
index 1eef4ff..bd30186 100644
--- a/arch/ppc/syslib/ppc4xx_dma.c
+++ b/arch/ppc/syslib/ppc4xx_dma.c
@@ -241,7 +241,7 @@
 }
 
 /*
- *   Returns the number of bytes left to be transfered.
+ *   Returns the number of bytes left to be transferred.
  *   After a DMA transfer, this should return zero.
  *   Reading this while a DMA transfer is still in progress will return
  *   unpredictable results.