drivers: npm2100: remove SHPHLD button reconfiguration

Do not reconfigure the SHPHLD button behavior by writing to the sticky
register in drivers: mfd, regulator: npm2100. This is removed to avoid
unexpected behaviors during or after the ship or hibernation modes.

Signed-off-by: Sergei Ovchinnikov <sergei.ovchinnikov@nordicsemi.no>

Author: seov-nordic

drivers/mfd/mfd_npm2100.c

@@ -355,17 +355,6 @@ int mfd_npm2100_hibernate(const struct device *dev, uint32_t time_ms, bool pass_
 		}
 	}
 
-	/* Ensure shiphold button is enabled so that wakeup will work */
-	ret = i2c_reg_write_byte_dt(&config->i2c, RESET_WRITESTICKY, 0);
-	if (ret < 0) {
-		return ret;
-	}
-
-	ret = i2c_reg_write_byte_dt(&config->i2c, RESET_STROBESTICKY, 1U);
-	if (ret < 0) {
-		return ret;
-	}
-
 	return i2c_reg_write_byte_dt(
 		&config->i2c, pass_through ? HIBERNATE_TASKS_HIBERPT : HIBERNATE_TASKS_HIBER, 1U);
 }

drivers/regulator/regulator_npm2100.c

@@ -642,18 +642,6 @@ static int regulator_npm2100_ship_mode(const struct device *dev)
 {
 	const struct regulator_npm2100_pconfig *pconfig = dev->config;
 
-	/* Ensure shiphold button is enabled so that wakeup will work */
-	int ret = i2c_reg_write_byte_dt(&pconfig->i2c, RESET_WRITESTICKY, 0);
-
-	if (ret < 0) {
-		return ret;
-	}
-
-	ret = i2c_reg_write_byte_dt(&pconfig->i2c, RESET_STROBESTICKY, 1U);
-	if (ret < 0) {
-		return ret;
-	}
-
 	return i2c_reg_write_byte_dt(&pconfig->i2c, SHIP_TASK_SHIP, 1U);
 }