Update to v5.16 kernel headers.

Kernel headers coming from:

Git: https://android.googlesource.com/kernel/common/
Branch: android-mainline
Tag: android-mainline-5.16

Test: Builds and bionic unit tests pass.
Change-Id: I2522c4f2a0efb9f8a193e1f2d65868e478217502
diff --git a/libc/kernel/uapi/linux/virtio_mem.h b/libc/kernel/uapi/linux/virtio_mem.h
index d6542b7..66ffce1 100644
--- a/libc/kernel/uapi/linux/virtio_mem.h
+++ b/libc/kernel/uapi/linux/virtio_mem.h
@@ -23,6 +23,7 @@
 #include <linux/virtio_ids.h>
 #include <linux/virtio_config.h>
 #define VIRTIO_MEM_F_ACPI_PXM 0
+#define VIRTIO_MEM_F_UNPLUGGED_INACCESSIBLE 1
 #define VIRTIO_MEM_REQ_PLUG 0
 #define VIRTIO_MEM_REQ_UNPLUG 1
 #define VIRTIO_MEM_REQ_UNPLUG_ALL 2