kdbus: Add readme about kernel tree requirements

To build kdbus module, there are some requirements for kernel
tree. Add readme about the required change in kernel tree.

Change-Id: Ia98680e2b0036ee6b9ec559ddfc5e9ab75e2aa1c
Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com>

diff --git a/kernel/kdbus/README.md b/kernel/kdbus/README.md
new file mode 100644 (file)
index 0000000..0db3670
--- /dev/null
+++ b/kernel/kdbus/README.md
@@ -0,0 +1,5 @@
+# KDBUS
+
+To build kdbus module, below commits should be reverted from kernel source tree:
+  the commit d16b3af46679 ("cgroup: remove unused task_cgroup_path()") for v6.5 or later version
+  the commit 8f546ae1fc5c ("fs: unexport poll_schedule_timeout") for v4.18 or later version