staging: r8188eu: simplify multiplication in core/rtw_ioctl_set.c

Simplify multiplication in core/rtw_ioctl_set.c. to improve readability
and clear a checkpatch issue.

CHECK: spaces preferred around that '/' (ctx:VxV)
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210816155818.24005-8-straube.linux@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/r8188eu/core/rtw_ioctl_set.c

@@ -825,7 +825,7 @@ u16 rtw_get_cur_max_rate(struct adapter *adapter)
 			i++;
 		}
 
-		max_rate = max_rate*10/2;
+		max_rate *= 5;
 	}
 
 	return max_rate;