Update to v6.8 kernel headers.

Kernel headers coming from:

Git: https://android.googlesource.com/kernel/common/
Branch: android-mainline
Tag: android-mainline-6.8

Test: Builds and bionic unit tests pass on raven.
Test: Able to log in to an Android GO 32 bit device.
Change-Id: I0022cdb20c19726f526acaab2866f1e25794b77e
diff --git a/libc/kernel/uapi/linux/vfio.h b/libc/kernel/uapi/linux/vfio.h
index 1107b21..5910e40 100644
--- a/libc/kernel/uapi/linux/vfio.h
+++ b/libc/kernel/uapi/linux/vfio.h
@@ -336,6 +336,7 @@
   VFIO_DEVICE_STATE_RUNNING_P2P = 5,
   VFIO_DEVICE_STATE_PRE_COPY = 6,
   VFIO_DEVICE_STATE_PRE_COPY_P2P = 7,
+  VFIO_DEVICE_STATE_NR,
 };
 struct vfio_precopy_info {
   __u32 argsz;