Update to v5.9 kernel headers.

Kernel headers coming from:

Git: https://android.googlesource.com/kernel/common/
Branch: android-mainline
Tag: android-mainline-5.9

Test: Boots cuttlefish 64bit, passes 32 bit and 64 bit bionic unit tests.
Change-Id: Ib5503355b238ea75595538e63eb000c867d06ef7
diff --git a/libc/kernel/uapi/linux/devlink.h b/libc/kernel/uapi/linux/devlink.h
index 7730a45..9b4d104 100644
--- a/libc/kernel/uapi/linux/devlink.h
+++ b/libc/kernel/uapi/linux/devlink.h
@@ -323,6 +323,10 @@
   DEVLINK_ATTR_TRAP_POLICER_ID,
   DEVLINK_ATTR_TRAP_POLICER_RATE,
   DEVLINK_ATTR_TRAP_POLICER_BURST,
+  DEVLINK_ATTR_PORT_FUNCTION,
+  DEVLINK_ATTR_INFO_BOARD_SERIAL_NUMBER,
+  DEVLINK_ATTR_PORT_LANES,
+  DEVLINK_ATTR_PORT_SPLITTABLE,
   __DEVLINK_ATTR_MAX,
   DEVLINK_ATTR_MAX = __DEVLINK_ATTR_MAX - 1
 };
@@ -353,4 +357,10 @@
 enum devlink_resource_unit {
   DEVLINK_RESOURCE_UNIT_ENTRY,
 };
+enum devlink_port_function_attr {
+  DEVLINK_PORT_FUNCTION_ATTR_UNSPEC,
+  DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR,
+  __DEVLINK_PORT_FUNCTION_ATTR_MAX,
+  DEVLINK_PORT_FUNCTION_ATTR_MAX = __DEVLINK_PORT_FUNCTION_ATTR_MAX - 1
+};
 #endif