dragon: Update prebuilt kernel to 54b581ad6e86b5240127be1f0bcf9e56f20bc701

Build: trybot-smaug-paladin/R48-7566.1.0-b532

Changes include:
* 54b581a CHROMIUM: drm/panel: lpm102a188a: Set the PWM threshold to 100%
* 86f9020 CHROMIUM: drm/panel: lpm102a188a: Return zero or error
* 40aab6e HACK: CHROMIUM: security: tlk_driver: fix sys_munlock issue
* 6e00ad1 HACK: security: tlk_driver: lock/fault userspace pages

Change-Id: Idd1a99f2a8bd3e0f7493186598f39e529d3cf0bb
diff --git a/Image.fit b/Image.fit
index 9534749..82732a8 100644
--- a/Image.fit
+++ b/Image.fit
Binary files differ