build/debian: Enable DRM in our custom kernel
The `cloud` flavor, on which our `avf` flavor is based,
disables several kernel configs.
In particular, it disabled the DRM which is necessary
for rendering the VM's display.
In this CL, we:
1. reorganize the "patches" and "configs" under kernel/
2. enable `CONFIG_DRM` for our `avf` flavor
Bug: 396003095
Test: ./build_in_container.sh -a aarch64 -k
Test: deployed on Komodo, and run `enable_display && weston-terminal`
Change-Id: Ied14f655e1d9016d987cf3b6334ba2c3befd547b
diff --git a/build/debian/kernel/config b/build/debian/kernel/config
new file mode 100644
index 0000000..1ba603c
--- /dev/null
+++ b/build/debian/kernel/config
@@ -0,0 +1 @@
+CONFIG_DRM=m