Merge "Revert "fs_mgr: correct warning on unused function parameter""

/* Add an entry to the fstab, and return 0 on success or -1 on error */

int fs_mgr_add_entry(struct fstab *fstab,

                     const char *mount_point, const char *fs_type,

                     const char *blk_device, long long length  __attribute__(unused))

                     const char *blk_device, long long length)

{

    struct fstab_rec *new_fstab_recs;

    int n = fstab->num_entries;