bsps/arm: Move bsp_memory_management_initialize()

This function is only used by the raspberrypi BSP.

This patch is a part of the BSP source reorganization.

Update #3285.

bsps/include/bsp/mm.h

@@ -1,41 +0,0 @@
-/**
- *  @file
- *
- *  @ingroup shared_mm
- *
- *  @brief MM Support
- */
-
-/*
- * Copyright (c) 2013 Hesham AL-Matary.
- * Copyright (c) 2013 Gedare Bloom.
- *
- * The license and distribution terms for this file may be
- * found in the file LICENSE in this distribution or at
- * http://www.rtems.org/license/LICENSE.
- */
-
-#ifndef __LIBBSP_MM_H
-#define __LIBBSP_MM_H
-
-#include <stdint.h>
-#include <stdlib.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/**
- *  @defgroup shared_mm MM Support
- *
- *  @ingroup shared_include
- *
- *  @brief MM Support Package
- */
-
-void bsp_memory_management_initialize(void);
-
-#ifdef __cplusplus
-}
-#endif
-#endif