Update to kernel headers v4.9.3.

Test: Built arm, arm64, x86, x86_64 targets.
Test: Booted on angler, and ran bionic unit tests (32 bit and 64 bit).

Change-Id: I1e1baf5e5ce74283d21140736aad64c25dbdbe4e
diff --git a/original/uapi/linux/pkt_sched.h b/original/uapi/linux/pkt_sched.h
index 2382eed..df7451d 100644
--- a/original/uapi/linux/pkt_sched.h
+++ b/original/uapi/linux/pkt_sched.h
@@ -792,6 +792,8 @@
 
 	TCA_FQ_ORPHAN_MASK,	/* mask applied to orphaned skb hashes */
 
+	TCA_FQ_LOW_RATE_THRESHOLD, /* per packet delay under this rate */
+
 	__TCA_FQ_MAX
 };
 
@@ -809,7 +811,7 @@
 	__u32	flows;
 	__u32	inactive_flows;
 	__u32	throttled_flows;
-	__u32	pad;
+	__u32	unthrottle_latency_ns;
 };
 
 /* Heavy-Hitter Filter */