Fix pipa fastcharge problem caused by using float number for VBAT cal…

…culation

drivers/power/supply/ti/bq2597x_charger_pipa.c

@@ -57,7 +57,7 @@ enum {
 	ADC_MAX_NUM,
 };
 
-static float sc8551_adc_lsb[] = {
+static int sc8551_adc_lsb[] = {
 	[ADC_IBUS]	= SC8551_IBUS_ADC_LSB,
 	[ADC_VBUS]	= SC8551_VBUS_ADC_LSB,
 	[ADC_VAC]	= SC8551_VAC_ADC_LSB,
@@ -1108,10 +1108,8 @@ static int bq2597x_get_adc_data(struct bq2597x *bq, int channel,  int *result)
 		*result = t;
 		/* vbat need calibration read by NU2105 */
 		if (channel == ADC_VBAT) {
-			kernel_neon_begin();
-			t = t * (1 + 1.803 * 0.001);
+			t = t * (1 + 1803 / 1000000);
 			*result = t;
-			kernel_neon_end();
 		}
 	} else {
 		ret = bq2597x_read_word(bq, ADC_REG_BASE + (channel << 1), &val);
@@ -1123,9 +1121,7 @@ static int bq2597x_get_adc_data(struct bq2597x *bq, int channel,  int *result)
 		*result = t;
 
 		if (bq->chip_vendor == SC8551) {
-			kernel_neon_begin();
-			*result = (int)(t * sc8551_adc_lsb[channel]);
-			kernel_neon_end();
+			*result = (u64)t * (u64)sc8551_adc_lsb[channel] / 10000000;
 		}
 	}