mmddk.h missing define

[Robert Reif]

Added a missing define.
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Index: include/mmddk.h
===================================================================
RCS file: /home/wine/wine/include/mmddk.h,v
retrieving revision 1.21
diff -u -r1.21 mmddk.h
--- include/mmddk.h	20 Aug 2004 20:01:31 -0000	1.21
+++ include/mmddk.h	17 Dec 2004 14:50:39 -0000
@@ -93,6 +93,8 @@
 #define DRV_QUERYDSOUNDDESC		(DRV_RESERVED + 21)
 #endif
 
+#define DRVM_MAPPER_PREFERRED_FLAGS_PREFERREDONLY   0x00000001
+
 #define WODM_INIT		DRVM_INIT
 #define WODM_GETNUMDEVS		 3
 #define WODM_GETDEVCAPS		 4