powerpc/pseries: Cut down on enthusiastic use of defines in RAS code

So many defines for such a little file. Most of them can go.

Also remove the single entry changelog, we have git for that.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

arch/powerpc/platforms/pseries/ras.c

@@ -16,39 +16,15 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  */
 
-/* Change Activity:
- * 2001/09/21 : engebret : Created with minimal EPOW and HW exception support.
- * End Change Activity
- */
-
-#include <linux/errno.h>
-#include <linux/threads.h>
-#include <linux/kernel_stat.h>
-#include <linux/signal.h>
 #include <linux/sched.h>
-#include <linux/ioport.h>
 #include <linux/interrupt.h>
-#include <linux/timex.h>
-#include <linux/init.h>
-#include <linux/delay.h>
 #include <linux/irq.h>
-#include <linux/random.h>
-#include <linux/sysrq.h>
-#include <linux/bitops.h>
+#include <linux/of.h>
 #include <linux/fs.h>
 #include <linux/reboot.h>
 
-#include <asm/uaccess.h>
-#include <asm/system.h>
-#include <asm/io.h>
-#include <asm/pgtable.h>
-#include <asm/irq.h>
-#include <asm/cache.h>
-#include <asm/prom.h>
-#include <asm/ptrace.h>
 #include <asm/machdep.h>
 #include <asm/rtas.h>
-#include <asm/udbg.h>
 #include <asm/firmware.h>
 
 #include "pseries.h"