headers: Add wmsdk.h

qtmultimedia checks for this in config.tests.

Signed-off-by: Biswapriyo Nath <nathbappai@gmail.com>
Signed-off-by: Jonathan Yong <10walls@gmail.com>
diff --git a/mingw-w64-headers/include/wmsdk.h b/mingw-w64-headers/include/wmsdk.h
new file mode 100644
index 0000000..c524745
--- /dev/null
+++ b/mingw-w64-headers/include/wmsdk.h
@@ -0,0 +1,13 @@
+/**
+ * This file has no copyright assigned and is placed in the Public Domain.
+ * This file is part of the mingw-w64 runtime package.
+ * No warranty is given; refer to the file DISCLAIMER.PD within this package.
+ */
+
+#include <winapifamily.h>
+
+#if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
+
+#include <wmsdkidl.h>
+
+#endif /* WINAPI_PARTITION_DESKTOP */