share_pool: Fix flags conflict

ascend inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I4SON8
CVE: NA

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MAP_SHARE_POOL and MAP_FIXED_NOREPLACE have the same value.
Redefine MAP_SHARE_POOL to fix it.
Signed-off-by: NWang Wensheng <wangwensheng4@huawei.com>
Reviewed-by: NWeilong Chen <chenweilong@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>

include/linux/share_pool.h

@@ -170,7 +170,7 @@ struct sp_walk_data {
 	pmd_t *pmd;
 };
 
-#define MAP_SHARE_POOL			0x100000
+#define MAP_SHARE_POOL			0x200000
 
 #define MMAP_TOP_4G_SIZE		0x100000000UL