flounder: update kernel prebuilt

d042dd6 flounder_defconfig: restrict access to perf events
2bdec1f ANDROID: restrict access to perf events
51936ac FROMLIST: security,perf: Allow further restriction of perf_event_open
b79154b BACKPORT: perf tools: Document the perf sysctls
64101d5 update defconfig to enable ext4 encryption

NB: commit 64101d5 or b/29022202 has no effect on flounder kernel
    build and represents an administrative change for other
    architectures.

Signed-off-by: Mark Salyzyn <salyzyn@google.com>
Bug: 29022202
Bug: 29054680
Bug: 29119870
Change-Id: I8a290f21c05eaaef0048f56afc1ef43c8db53ea6
diff --git a/Image.gz-dtb b/Image.gz-dtb
index 6a8ba7f..7c7226a 100644
--- a/Image.gz-dtb
+++ b/Image.gz-dtb
Binary files differ