chipset-bdw: Move to kernel-4_14

Moves the bdw family to the 4.14 kernel.

BUG=None
TEST=None

Change-Id: I528701eb977b5c5a6af2655a5dd8764c5ebb9a25
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/board-overlays/+/1862129
Reviewed-by: Jon Flatley <jflat@chromium.org>
Commit-Queue: Jon Flatley <jflat@chromium.org>
Tested-by: Jon Flatley <jflat@chromium.org>
diff --git a/chipset-bdw/profiles/base/make.defaults b/chipset-bdw/profiles/base/make.defaults
index c39f2c7..c34f601 100644
--- a/chipset-bdw/profiles/base/make.defaults
+++ b/chipset-bdw/profiles/base/make.defaults
@@ -9,7 +9,10 @@
 # Initial value just for style purposes.
 USE=""
 
-USE="${USE} kernel-3_14"
+USE="${USE} kernel-4_14"
+
+# Keep kernelnext flag until all boards have been migrated on stable
+USE="${USE} kernelnext"
 
 # Enable native one-copy texture upload.
 USE="${USE} native_gpu_memory_buffers"