Update to v5.11 kernel headers.

Kernel headers coming from:

Git: https://android.googlesource.com/kernel/common/
Branch: android-mainline
Tag: android-mainline-5.11

Test: Built cuttlefish and flame images. Ran bionic unit tests on both.
Change-Id: Ie60337aafad4bda55af99b6c8fe9f56bf2fa787f
diff --git a/libc/kernel/uapi/linux/vfio.h b/libc/kernel/uapi/linux/vfio.h
index 64fa801..f0f5c8f 100644
--- a/libc/kernel/uapi/linux/vfio.h
+++ b/libc/kernel/uapi/linux/vfio.h
@@ -212,6 +212,7 @@
 enum {
   VFIO_CCW_IO_IRQ_INDEX,
   VFIO_CCW_CRW_IRQ_INDEX,
+  VFIO_CCW_REQ_IRQ_INDEX,
   VFIO_CCW_NUM_IRQS
 };
 struct vfio_pci_dependent_device {