am 7500711a: (-s ours) am d432ae9c: (-s ours) Revert "Revert "hammerhead: update prebuilt kernel""

* commit '7500711a9c2038b1404bddf08380c1274f1e3845':
diff --git a/zImage-dtb b/zImage-dtb
old mode 100644
new mode 100755
index 3772698..7653e99
--- a/zImage-dtb
+++ b/zImage-dtb
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