Staging: vt6656: removed VOID/PVOID definitions

Warnings about the usage of externs in .c files were not resolved here.

Signed-off-by: Andres More <more.andres@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/staging/vt6656/tkip.h b/drivers/staging/vt6656/tkip.h
index 847ecdf..3dfa7f5 100644
--- a/drivers/staging/vt6656/tkip.h
+++ b/drivers/staging/vt6656/tkip.h
@@ -46,7 +46,7 @@
 
 /*---------------------  Export Functions  --------------------------*/
 
-VOID TKIPvMixKey(
+void TKIPvMixKey(
     PBYTE   pbyTKey,
     PBYTE   pbyTA,
     WORD    wTSC15_0,