[ARM] spelling fixes

Spelling fixes in arch/arm/.

Signed-off-by: Simon Arlott <simon@fire.lp0.eu>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/mm/alignment.c b/arch/arm/mm/alignment.c
index 19ca333..36440c8 100644
--- a/arch/arm/mm/alignment.c
+++ b/arch/arm/mm/alignment.c
@@ -3,7 +3,7 @@
  *
  *  Copyright (C) 1995  Linus Torvalds
  *  Modifications for ARM processor (c) 1995-2001 Russell King
- *  Thumb aligment fault fixups (c) 2004 MontaVista Software, Inc.
+ *  Thumb alignment fault fixups (c) 2004 MontaVista Software, Inc.
  *  - Adapted from gdb/sim/arm/thumbemu.c -- Thumb instruction emulation.
  *    Copyright (C) 1996, Cygnus Software Technologies Ltd.
  *
diff --git a/arch/arm/mm/ioremap.c b/arch/arm/mm/ioremap.c
index d6167ad..f3ade18 100644
--- a/arch/arm/mm/ioremap.c
+++ b/arch/arm/mm/ioremap.c
@@ -346,7 +346,7 @@
 #ifndef CONFIG_SMP
 	/*
 	 * If this is a section based mapping we need to handle it
-	 * specially as the VM subysystem does not know how to handle
+	 * specially as the VM subsystem does not know how to handle
 	 * such a beast. We need the lock here b/c we need to clear
 	 * all the mappings before the area can be reclaimed
 	 * by someone else.
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index 2ba1530..02e050a 100644
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -92,7 +92,7 @@
 };
 
 /*
- * These are useful for identifing cache coherency
+ * These are useful for identifying cache coherency
  * problems by allowing the cache or the cache and
  * writebuffer to be turned off.  (Note: the write
  * buffer should not be on and the cache off).