staging: rtl8188eu: use compound assignment operators

Use compound assignment operators to simplify the code and clear
missing spaces around operators checkpatch issues.
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20200629161255.28371-1-straube.linux@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8188eu/os_dep/ioctl_linux.c

@@ -211,7 +211,7 @@ static char *translate_scan(struct adapter *padapter,
 		else/* default MCS7 */
 			max_rate = (bw_40MHz) ? ((short_GI) ? 150 : 135) : ((short_GI) ? 72 : 65);
 
-		max_rate = max_rate*2;/* Mbps/2; */
+		max_rate *= 2; /* Mbps/2; */
 	}
 
 	iwe.cmd = SIOCGIWRATE;
@@ -1395,7 +1395,7 @@ static int rtw_wx_set_rate(struct net_device *dev,
 		ratevalue = 11;
 		goto set_rate;
 	}
-	target_rate = target_rate/100000;
+	target_rate /= 100000;
 
 	switch (target_rate) {
 	case 10: