hikey960: use /dev/block/by-name/ for userdata mountpoint

To easily adjust partitions, avoid using hard-coded value sdd13.

Test: boot
Change-Id: I97f976c781931363c62550e40124471011e0436b
Signed-off-by: Gao Xiang <gaoxiang25@huawei.com>
diff --git a/hikey960/fstab.hikey960 b/hikey960/fstab.hikey960
index fd957de..9229c48 100644
--- a/hikey960/fstab.hikey960
+++ b/hikey960/fstab.hikey960
@@ -6,8 +6,8 @@
 #/dev/block/platform/soc/ff3b0000.ufs/by-name/system_a    /system    ext4    ro                                                                   wait
 #/dev/block/platform/soc/ff3b0000.ufs/by-name/cache       /cache     ext4    discard,noauto_da_alloc,data=ordered,user_xattr,barrier=1    wait
 #/dev/block/platform/soc/ff3b0000.ufs/by-name/userdata    /data      ext4    discard,noauto_da_alloc,data=ordered,user_xattr,barrier=1    wait
-/dev/block/sdd13    /data      f2fs    discard,noatime,nosuid,nodev                                 wait,check,fileencryption=software,quota
-/dev/block/sdd13    /data      ext4    discard,noatime,noauto_da_alloc,data=ordered,user_xattr,barrier=1    wait,formattable
+/dev/block/by-name/userdata    /data      f2fs    discard,noatime,nosuid,nodev                                 wait,check,fileencryption=software,quota
+/dev/block/by-name/userdata    /data      ext4    discard,noatime,noauto_da_alloc,data=ordered,user_xattr,barrier=1    wait,formattable
 /devices/platform/soc/ff37f000.dwmmc1/mmc_host/mmc*      auto       auto    defaults    voldmanaged=sdcard1:auto,encryptable=userdata
 /devices/platform/soc/ff200000.hisi_usb/ff100000.dwc3/xhci-hcd.*.auto/usb*               auto               auto      defaults  voldmanaged=usbdisk:auto,encryptable=userdata
 /devices/platform/soc/f4000000.pcie/pci0000:00/0000:00:00.0/0000:01:00.0/nvme/nvme*      auto       auto    defaults    voldmanaged=nvmedisk:auto,encryptable=userdata