staging: vt6655: fix comparison of bool to 0/1

This patch corrects comparison of bool to 0/1 for file
drivers/staging/vt6655/rxtx.c. The following type of coccinelle detected
warnings are silenced:

WARNING: Comparison of bool to 0/1
Signed-off-by: Teodora Baluta <teobaluta@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/vt6655/rxtx.c

@@ -435,7 +435,7 @@ s_uGetDataDuration(
 
 	switch (byDurType) {
 	case DATADUR_B:    //DATADUR_B
-		if (((uMACfragNum == 1)) || (bLastFrag == 1)) {//Non Frag or Last Frag
+		if (((uMACfragNum == 1)) || bLastFrag) {//Non Frag or Last Frag
 			if (bNeedAck) {
 				uAckTime = BBuGetFrameTime(pDevice->byPreambleType, byPktType, 14, pDevice->byTopCCKBasicRate);
 				return pDevice->uSIFS + uAckTime;
@@ -458,7 +458,7 @@ s_uGetDataDuration(
 		break;
 
 	case DATADUR_A:    //DATADUR_A
-		if (((uMACfragNum == 1)) || (bLastFrag == 1)) {//Non Frag or Last Frag
+		if (((uMACfragNum == 1)) || bLastFrag) {//Non Frag or Last Frag
 			if (bNeedAck) {
 				uAckTime = BBuGetFrameTime(pDevice->byPreambleType, byPktType, 14, pDevice->byTopOFDMBasicRate);
 				return pDevice->uSIFS + uAckTime;
@@ -481,7 +481,7 @@ s_uGetDataDuration(
 		break;
 
 	case DATADUR_A_F0:    //DATADUR_A_F0
-		if (((uMACfragNum == 1)) || (bLastFrag == 1)) {//Non Frag or Last Frag
+		if (((uMACfragNum == 1)) || bLastFrag) {//Non Frag or Last Frag
 			if (bNeedAck) {
 				uAckTime = BBuGetFrameTime(pDevice->byPreambleType, byPktType, 14, pDevice->byTopOFDMBasicRate);
 				return pDevice->uSIFS + uAckTime;
@@ -523,7 +523,7 @@ s_uGetDataDuration(
 		break;
 
 	case DATADUR_A_F1:    //DATADUR_A_F1
-		if (((uMACfragNum == 1)) || (bLastFrag == 1)) {//Non Frag or Last Frag
+		if (((uMACfragNum == 1)) || bLastFrag) {//Non Frag or Last Frag
 			if (bNeedAck) {
 				uAckTime = BBuGetFrameTime(pDevice->byPreambleType, byPktType, 14, pDevice->byTopOFDMBasicRate);
 				return pDevice->uSIFS + uAckTime;