sh: move the hp6xx pm code

Move the not-so-generic pm code from arch/sh/kernel/pm.c to the
platform directory together with the rest of the hp6xx pm code.

This is done to let non-hp6xx platforms enable CONFIG_PM.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

arch/sh/include/asm/pm.h

@@ -1,17 +0,0 @@
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright 2006 (c) Andriy Skulysh <askulysh@gmail.com>
- *
- */
-#ifndef __ASM_SH_PM_H
-#define __ASM_SH_PM_H
-
-extern u8 wakeup_start;
-extern u8 wakeup_end;
-
-void pm_enter(void);
-
-#endif