staging: vt6655: Type conversion was made.

This patch fixes this sparse warning:
drivers/staging/vt6655/device_main.c:385:40: warning: mixing different enum types
drivers/staging/vt6655/device_main.c:385:40:     int enum _VIA_BB_TYPE versus
drivers/staging/vt6655/device_main.c:385:40:     int enum _VIA_PKT_TYPE

Signed-off-by: Gulsah Kose <gulsah.1004@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/vt6655/device_main.c

@@ -381,7 +381,7 @@ device_set_options(struct vnt_private *pDevice)
 	if (pDevice->uConnectionRate < RATE_AUTO)
 		pDevice->bFixRate = true;
 	pDevice->byBBType = pDevice->sOpts.bbp_type;
-	pDevice->byPacketType = pDevice->byBBType;
+	pDevice->byPacketType = (VIA_PKT_TYPE)pDevice->byBBType;
 	pDevice->byAutoFBCtrl = AUTO_FB_0;
 	pDevice->bUpdateBBVGA = true;
 	pDevice->byFOETuning = 0;