fix: 增加MPU功能的开关宏，默认关闭

close #I3WE0S
Signed-off-by: NJerryH <huangjieliang@huawei.com>
Change-Id: Id193fd555877ac0c6b5b43e5dd5ede32531b86c4

kernel/arch/arm/cortex-m4/gcc/los_mpu.c

@@ -32,6 +32,7 @@
 #include "los_config.h"
 #include "los_context.h"
 
+#if (LOSCFG_MPU_ENABLE == 1)
 
 #define SIZE_4G_BYTE        0x100000000
 #define MPU_MAX_REGION_NUM  8
@@ -233,4 +234,4 @@ INT32 HalMpuUnusedRegionGet(VOID)
         return id;
     }
 }
-
+#endif

kernel/arch/arm/cortex-m4/iar/los_mpu.c

@@ -32,6 +32,7 @@
 #include "los_config.h"
 #include "los_context.h"
 
+#if (LOSCFG_MPU_ENABLE == 1)
 
 #define SIZE_4G_BYTE        0x100000000
 #define MPU_MAX_REGION_NUM  8
@@ -233,4 +234,4 @@ INT32 HalMpuUnusedRegionGet(VOID)
         return id;
     }
 }
-
+#endif

kernel/arch/arm/cortex-m7/iar/los_mpu.c

@@ -32,6 +32,7 @@
 #include "los_config.h"
 #include "los_context.h"
 
+#if (LOSCFG_MPU_ENABLE == 1)
 
 #define SIZE_4G_BYTE        0x100000000
 #define MPU_MAX_REGION_NUM  8
@@ -233,4 +234,4 @@ INT32 HalMpuUnusedRegionGet(VOID)
         return id;
     }
 }
-
+#endif

kernel/include/los_config.h

@@ -765,6 +765,14 @@ extern UINT8 *m_aucSysMem0;
 #define LOSCFG_SECURE_STACK_DEFAULT_SIZE                     512
 #endif
 
+/**
+ * @ingroup los_config
+ * Configuration item for mpu.
+ */
+#ifndef LOSCFG_MPU_ENABLE
+#define LOSCFG_MPU_ENABLE                                    0
+#endif
+
 #ifdef __cplusplus
 #if __cplusplus
 }