Speed up ds18b20 convert time according to resolution

Change-Id: I501ddd7f335eabb86cf3dfa424edcdee0e944d69
Reviewed-on: https://tp-biosrd-v02/gerrit/82974
Reviewed-by: Jamess Huang(黃以民) <Jamess_Huang@asus.com>
Tested-by: Jamess Huang(黃以民) <Jamess_Huang@asus.com>

Author: yc-hou-0919

drivers/w1/slaves/w1_therm.c

@@ -29,7 +29,6 @@
 #include <linux/types.h>
 #include <linux/slab.h>
 #include <linux/delay.h>
-#include <linux/uaccess.h>
 
 #include "../w1.h"
 #include "../w1_int.h"
@@ -264,7 +263,7 @@ static ssize_t w1_slave_show(struct device *device,
 
 		if (!w1_reset_select_slave(sl)) {
 			int count = 0;
-			unsigned int tm = 750;
+			unsigned int tm = 750/(1 << (3 - w1_ds18b20_res));
 			unsigned long sleep_rem;
 
 			w1_write_8(dev, W1_READ_PSUPPLY);