Update to v5.12 kernel headers.

Kernel headers coming from:

Git: https://android.googlesource.com/kernel/common/
Branch: android-mainline
Tag: android-mainline-5.12

Test: Boots flame device and runs bionic unit tests.
Test: Boots acloud device and runs bionic unit tests.

Change-Id: I8ac107ce9d4978be3ef9517b90ad6ecafd06785a
diff --git a/libc/kernel/uapi/linux/if_bonding.h b/libc/kernel/uapi/linux/if_bonding.h
index 0079f30..60abfde 100644
--- a/libc/kernel/uapi/linux/if_bonding.h
+++ b/libc/kernel/uapi/linux/if_bonding.h
@@ -50,6 +50,7 @@
 #define BOND_XMIT_POLICY_LAYER23 2
 #define BOND_XMIT_POLICY_ENCAP23 3
 #define BOND_XMIT_POLICY_ENCAP34 4
+#define BOND_XMIT_POLICY_VLAN_SRCMAC 5
 #define LACP_STATE_LACP_ACTIVITY 0x1
 #define LACP_STATE_LACP_TIMEOUT 0x2
 #define LACP_STATE_AGGREGATION 0x4