Revert "dragon: Update prebuilt kernel to acae30e8a307b3cd576b918b89e64c61760e9667"

Reset kernel back to stabilize-smaug-7800.B.

This reverts commit 06ae4f4c1a42b03603055d3c9e6af6e80386bda5.
diff --git a/Image.fit b/Image.fit
index 338419c..c1b9b7e 100644
--- a/Image.fit
+++ b/Image.fit
Binary files differ