If the /home dir is empty, you can just edit /etc/fstab
/dev/sdc1 /home ext4 defaults 1 1
If it has data in it either copy the content temporarily elsewhere, then do above and copy content back or rename /home => /old_home, then create a new /home, edit fstab as above and copy content from /old_home to /home.
Note that the new home dir must have the same ownerships, permissions and SELinux settings as the original.
Can you show us what distro+version you have
Also current disk layout
Lowercase L for fdisk param