Yocto separate home partition; best practice for fstab generation - yocto

Question

I've started experimenting with Yocto, starting from my evaluation kit manufacturer's repository. Since I want to have a read-only root, I want to move /home to a separate read/write partition.
I can create the partitions on the SD image by creating a custom wic.in.
part u-boot --source rawcopy --sourceparams="file=imx-boot" --ondisk mmcblk --no-table --align ${IMX_BOOT_SEEK}
part / --source rootfs --ondisk mmcblk --fstype=ext4 --label root --align 8192 --fixed-size=4096M --exclude-path=home/
part /home --source rootfs --rootfs-dir=${IMAGE_ROOTFS}/home --ondisk mmcblk --fstype=ext4 --label home --align 8192 --fixed-size=2048M
bootloader --ptable msdos
But the home partition is not used as HOME, but mounted as a normal data partition in media.
root#imx8mp-var-dart:/# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
mmcblk2 179:0 0 14.6G 0 disk
`-mmcblk2p1 179:1 0 14.6G 0 part /run/media/mmcblk2p1
mmcblk2boot0 179:32 0 4M 1 disk
mmcblk2boot1 179:64 0 4M 1 disk
mmcblk1 179:96 0 14.8G 0 disk
|-mmcblk1p1 179:97 0 4G 0 part /
`-mmcblk1p2 179:98 0 4G 0 part /run/media/mmcblk1p2
Default fstab (file located in poky's layer) doesn't have the new home entry, so that's the expected behavior.
# stock fstab - you probably want to override this with a machine specific one
/dev/root / auto defaults 1 1
proc /proc proc defaults 0 0
devpts /dev/pts devpts mode=0620,ptmxmode=0666,gid=5 0 0
tmpfs /run tmpfs mode=0755,nodev,nosuid,strictatime 0 0
tmpfs /var/volatile tmpfs defaults 0 0
# uncomment this if your device has a SD/MMC/Transflash slot
#/dev/mmcblk0p1 /media/card auto defaults,sync,noauto 0 0
I've "stolen" the wic.in configuration from [here][1]. A comment in the same thread states that "WIC will automatically add an entry in fstab". But that doesn't seems the case...
How to let Yocto/WIC populate fstab correctly, so that the home partition is actually used as HOME?
Another approach is to add a manually generated fstab in a custom layer.
/dev/root / auto defaults 1 1
proc /proc proc defaults 0 0
devpts /dev/pts devpts mode=0620,ptmxmode=0666,gid=5 0 0
tmpfs /run tmpfs mode=0755,nodev,nosuid,strictatime 0 0
tmpfs /var/volatile tmpfs defaults 0 0
/dev/mmcblk1p2 /home auto defaults 0 0
Done it, and it works. Although I don't really like the fact that I have to define the SD card partition name as input. As an example, if I add a third partition between root and home, home partition will become mmcblk1p3, and I need to edit fstab, too.
Looks like the root partition is just pointing to /dev/root. I suppose it works because the partition is labeled root. (On a side note, /dev/root doesn't exist in root filesystem (searched with ls -la /dev)). Tried to use /dev/home, but it didn't work.
Is there a way to declare the home partition in fstab without using the "low level" SD partition name, but something more generic/portable?