missing: re-add drm related entries

This effectively reverts dab28f0905.

Fixes #11075.

src/basic/meson.build

@@ -96,6 +96,7 @@ basic_sources = files('''
         missing_btrfs.h
         missing_btrfs_tree.h
         missing_capability.h
+        missing_drm.h
         missing_ethtool.h
         missing_fcntl.h
         missing_fib_rules.h

src/basic/missing.h

@@ -6,6 +6,7 @@
 #include "missing_audit.h"
 #include "missing_btrfs_tree.h"
 #include "missing_capability.h"
+#include "missing_drm.h"
 #include "missing_fcntl.h"
 #include "missing_fs.h"
 #include "missing_input.h"

src/basic/missing_drm.h

@@ -0,0 +1,10 @@
+/* SPDX-License-Identifier: LGPL-2.1+ */
+#pragma once
+
+#ifndef DRM_IOCTL_SET_MASTER
+#define DRM_IOCTL_SET_MASTER _IO('d', 0x1e)
+#endif
+
+#ifndef DRM_IOCTL_DROP_MASTER
+#define DRM_IOCTL_DROP_MASTER _IO('d', 0x1f)
+#endif