grouper: update prebuilt kernel

d91c56b perf: Treat attr.config as u64 in perf_swevent_init()

Bug: 8961094

Change-Id: Ic8c1aa5120486bb9b11e0753216854036d3c12b5
Signed-off-by: Ed Tam <etam@google.com>
diff --git a/kernel b/kernel
index 7bd07f1..89992a7 100644
--- a/kernel
+++ b/kernel
Binary files differ