[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/hawk_common.c b/arch/ppc/syslib/hawk_common.c
index c5bf16b..86821d8 100644
--- a/arch/ppc/syslib/hawk_common.c
+++ b/arch/ppc/syslib/hawk_common.c
@@ -165,7 +165,7 @@
 				 processor_pci_mem_start + 
 				 hose->mem_space.start) | 0x0);
 
-	/* Map MPIC into vitual memory */
+	/* Map MPIC into virtual memory */
 	OpenPIC_Addr = ioremap(processor_mpic_base, HAWK_MPIC_SIZE);
 
 	return 0;
@@ -176,7 +176,7 @@
  * This assumes that PPCBug has initialized the memory controller (SMC)
  * on the Falcon/HAWK correctly (i.e., it does no sanity checking).
  * It also assumes that the memory base registers are set to configure the
- * memory as contigous starting with "RAM A BASE", "RAM B BASE", etc.
+ * memory as contiguous starting with "RAM A BASE", "RAM B BASE", etc.
  * however, RAM base registers can be skipped (e.g. A, B, C are set,
  * D is skipped but E is set is okay).
  */