Update to kernel headers v5.3.2.

Test: Builds and run unit tests on taimen/cuttlefish.
Change-Id: I6ebd8f179d159ac974555e8edca588083e8081b3
diff --git a/libc/kernel/uapi/linux/if_packet.h b/libc/kernel/uapi/linux/if_packet.h
index 300aa7b..db24bbe 100644
--- a/libc/kernel/uapi/linux/if_packet.h
+++ b/libc/kernel/uapi/linux/if_packet.h
@@ -117,7 +117,7 @@
 #define TP_STATUS_WRONG_FORMAT (1 << 2)
 #define TP_STATUS_TS_SOFTWARE (1 << 29)
 #define TP_STATUS_TS_SYS_HARDWARE (1 << 30)
-#define TP_STATUS_TS_RAW_HARDWARE (1 << 31)
+#define TP_STATUS_TS_RAW_HARDWARE (1U << 31)
 #define TP_FT_REQ_FILL_RXHASH 0x1
 struct tpacket_hdr {
   unsigned long tp_status;