[ARM] leds.c, being so basic, needs linux/compiler.h

linux/init.h doesn't include linux/compiler.h, but needs some
definitions (the __attribute_unused__ stuff) from compiler.h.
Since this affects only two files, we include linux/compiler.h
directly into the affected files.

arch/arm/mach-pxa/leds.c

@@ -7,6 +7,7 @@
  *
  * Copyright (c) 2001 Jeff Sutherland, Accelent Systems Inc.
  */
+#include <linux/compiler.h>
 #include <linux/init.h>
 
 #include <asm/leds.h>

arch/arm/mach-sa1100/leds.c

@@ -5,6 +5,7 @@
  * 
  * Copyright (C) 2001 Nicolas Pitre
  */
+#include <linux/compiler.h>
 #include <linux/init.h>
 
 #include <asm/leds.h>