kernel prebuild update (disable oprofile, enable perf)

4c9f380 herring_defconfig: enable perf events and disable oprofile.

Change-Id: I66874716dce0ab4d456c72a0aa6088c52826ba22
diff --git a/kernel b/kernel
index 62effac..d8d1902 100644
--- a/kernel
+++ b/kernel
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