Fix misc .c/.h comment typos

Fix various .c/.h typos in comments (no code changes).

Signed-off-by: Matt LaPlante <kernel1@cyberdogtech.com>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
diff --git a/arch/sh64/lib/dbg.c b/arch/sh64/lib/dbg.c
index 1326f45..4310fc8 100644
--- a/arch/sh64/lib/dbg.c
+++ b/arch/sh64/lib/dbg.c
@@ -383,7 +383,7 @@
 /* ======================================================================= */
 
 /*
-** Depending on <base> scan the MMU, Data or Instrction side
+** Depending on <base> scan the MMU, Data or Instruction side
 ** looking for a valid mapping matching Eaddr & asid.
 ** Return -1 if not found or the TLB id entry otherwise.
 ** Note: it works only for 4k pages!