asm-*/compat.h: fix typo in comment

Signed-off-by: Marcin Ślusarz <marcin.slusarz@gmail.com>
Signed-off-by: Adrian Bunk <bunk@kernel.org>
diff --git a/include/asm-powerpc/compat.h b/include/asm-powerpc/compat.h
index 64ab1dd..d811a8c 100644
--- a/include/asm-powerpc/compat.h
+++ b/include/asm-powerpc/compat.h
@@ -119,7 +119,7 @@
  * A pointer passed in from user mode. This should not
  * be used for syscall parameters, just declare them
  * as pointers because the syscall entry code will have
- * appropriately comverted them already.
+ * appropriately converted them already.
  */
 typedef	u32		compat_uptr_t;