mfd: bd718x7: Remove hardcoded config for button press duration

The reset button on imx8mm-evk is tied to PWRON_B pin of bd71847 and the
long press duration is set to zero from OTP. The linux driver overrides
those values and breaks reset from button.

Overwriting OTP or bootloader configuration with some hardcoded defaults
is not desirable, keep already programmed values instead.

Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
Acked-By: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

drivers/mfd/rohm-bd718x7.c

@@ -118,29 +118,6 @@ static int bd718xx_i2c_probe(struct i2c_client *i2c,
 		return ret;
 	}
 
-	/* Configure short press to 10 milliseconds */
-	ret = regmap_update_bits(bd718xx->chip.regmap,
-				 BD718XX_REG_PWRONCONFIG0,
-				 BD718XX_PWRBTN_PRESS_DURATION_MASK,
-				 BD718XX_PWRBTN_SHORT_PRESS_10MS);
-	if (ret) {
-		dev_err(&i2c->dev,
-			"Failed to configure button short press timeout\n");
-		return ret;
-	}
-
-	/* Configure long press to 10 seconds */
-	ret = regmap_update_bits(bd718xx->chip.regmap,
-				 BD718XX_REG_PWRONCONFIG1,
-				 BD718XX_PWRBTN_PRESS_DURATION_MASK,
-				 BD718XX_PWRBTN_LONG_PRESS_10S);
-
-	if (ret) {
-		dev_err(&i2c->dev,
-			"Failed to configure button long press timeout\n");
-		return ret;
-	}
-
 	ret = regmap_irq_get_virq(bd718xx->irq_data, BD718XX_INT_PWRBTN_S);
 
 	if (ret < 0) {