Update to kernel headers v5.2.

Test: Booted a taimen, ran unit bionic unit tests.
Change-Id: I3522c59793bbcef98ea515996a481d92f14b8816
diff --git a/libc/kernel/uapi/linux/vfio_ccw.h b/libc/kernel/uapi/linux/vfio_ccw.h
index 047862f..6ed6830 100644
--- a/libc/kernel/uapi/linux/vfio_ccw.h
+++ b/libc/kernel/uapi/linux/vfio_ccw.h
@@ -28,4 +28,10 @@
   __u8 irb_area[IRB_AREA_SIZE];
   __u32 ret_code;
 } __packed;
+#define VFIO_CCW_ASYNC_CMD_HSCH (1 << 0)
+#define VFIO_CCW_ASYNC_CMD_CSCH (1 << 1)
+struct ccw_cmd_region {
+  __u32 command;
+  __u32 ret_code;
+} __packed;
 #endif