include: Add DIPROP_PRODUCTNAME and remove duplicate #defines from dinput.h

[Bruno Jesus]

DIPROP_PRODUCTNAME is used by Dolphin.

https://source.winehq.org/source/include/dinput.h#0900

Signed-off-by: Bruno Jesus <00cpxxx at gmail.com>
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diff --git a/include/dinput.h b/include/dinput.h
index a714eeb..beb81a7 100644
--- a/include/dinput.h
+++ b/include/dinput.h
@@ -908,9 +908,8 @@ typedef const DIPROPSTRING *LPCDIPROPSTRING;
 #define DIPROP_GUIDANDPATH	MAKEDIPROP(12)
 
 #define DIPROP_INSTANCENAME     MAKEDIPROP(13)
+#define DIPROP_PRODUCTNAME      MAKEDIPROP(14)
 #define DIPROP_JOYSTICKID       MAKEDIPROP(15)
-#define DIPROP_KEYNAME          MAKEDIPROP(20)
-#define DIPROP_VIDPID           MAKEDIPROP(24)
 
 #define DIPROP_KEYNAME     MAKEDIPROP(20)
 #define DIPROP_CPOINTS     MAKEDIPROP(21)