samples: add binderfs sample program

This adds a simple sample program mounting binderfs and adding, then
removing a binder device.  Hopefully, it will be helpful to users who want
to know how binderfs is supposed to be used.

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

1 files changed, 7 insertions, 0 deletions

diff --git a/samples/Kconfig b/samples/Kconfig
index ad1ec7016d4c..d19754ccad08 100644
--- a/samples/Kconfig
+++ b/samples/Kconfig
@@ -147,6 +147,13 @@ config SAMPLE_VFIO_MDEV_MBOCHS
           Specifically it does *not* include any legacy vga stuff.
           Device looks a lot like "qemu -device secondary-vga".
 
+config SAMPLE_ANDROID_BINDERFS
+        bool "Build Android binderfs example"
+        depends on CONFIG_ANDROID_BINDERFS
+        help
+          Builds a sample program to illustrate the use of the Android binderfs
+          filesystem.
+
 config SAMPLE_STATX
         bool "Build example extended-stat using code"
         depends on BROKEN