[PATCH] merge some from Rusty's trivial patches

This patch contains the most trivial from Rusty's trivial patches:
- spelling fixes
- remove duplicate includes

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/arch/ppc/kernel/dma-mapping.c b/arch/ppc/kernel/dma-mapping.c
index e0c631cf..b566d98 100644
--- a/arch/ppc/kernel/dma-mapping.c
+++ b/arch/ppc/kernel/dma-mapping.c
@@ -393,7 +393,7 @@
  * __dma_sync_page() implementation for systems using highmem.
  * In this case, each page of a buffer must be kmapped/kunmapped
  * in order to have a virtual address for __dma_sync(). This must
- * not sleep so kmap_atmomic()/kunmap_atomic() are used.
+ * not sleep so kmap_atomic()/kunmap_atomic() are used.
  *
  * Note: yes, it is possible and correct to have a buffer extend
  * beyond the first page.