Can't create additional binder devices the user needs to specify them

[yoosang won]

ubuntu azure seems not support binder FS.

$ uname -r
5.8.0-1026-azure
$ sudo modprobe binder_linux
$ mkdir ./tbinder
$ sudo mount -t binder binder ./tbinder
mount: /tbinder: unknown filesystem type 'binder'.
$ cat /proc/filesystems | grep binder

Another generic server working properly.
$ uname -r
5.4.0-45-generic
$ sudo modprobe binder_linux
$ mkdir ./tbinder
$ sudo mount -t binder binder ./tbinder
$ cat /proc/filesystems | grep binder
nodev binder
$ cd tbinder/
$ ls -al
total 4
drwxr-xr-x 2 root root 0 3월 31 11:14 .
crw------- 1 root root 240, 0 3월 31 11:14 binder-control