add apple-gmux.h for 6.1.28 drm

diff --git a/sys/dev/pci/drm/include/linux/apple-gmux.h b/sys/dev/pci/drm/include/linux/apple-gmux.h
new file mode 100644 (file)
index 0000000..1db2b95
--- /dev/null
+++ b/sys/dev/pci/drm/include/linux/apple-gmux.h
@@ -0,0 +1,12 @@
+/* Public domain. */
+
+#ifndef _LINUX_APPLE_GMUX_H
+#define _LINUX_APPLE_GMUX_H
+
+static inline bool
+apple_gmux_detect(void *a, void *b)
+{
+       return false;
+}
+
+#endif