config: enable CONFIG_NVME_MULTIPATH by default

driver inclusion
category: bugfix
bugzilla: NA
Link: https://gitee.com/openeuler/kernel/issues/I1WGZE

--------------------------------

set config CONFIG_NVME_MULTIPATH default value.
Reviewed-by: NChao Leng <lengchao@huawei.com>
Reviewed-by: NJike Cheng <chengjike.cheng@huawei.com>
Signed-off-by: NLijie <lijie34@huawei.com>
Acked-by: NHanjun Guo <guohanjun@huawei.com>
Reviewed-by: NHou Tao <houtao1@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>
Signed-off-by: NCheng Jian <cj.chengjian@huawei.com>

arch/arm64/configs/openeuler_defconfig

@@ -1956,7 +1956,7 @@ CONFIG_BLK_DEV_RBD=m
 #
 CONFIG_NVME_CORE=m
 CONFIG_BLK_DEV_NVME=m
-# CONFIG_NVME_MULTIPATH is not set
+CONFIG_NVME_MULTIPATH=y
 CONFIG_NVME_FABRICS=m
 CONFIG_NVME_RDMA=m
 CONFIG_NVME_FC=m