drivers: i2c: stm32: sync stm32_v2 RTIO on PM runtime state

Always call pm_device_runtime_get() when registering a target
even if the device is not wakeup capable to prevent I2C target not being
function if the device goes into a SoC Stop mode.

This change ports into the STM32 v2 RTIO driver the change made in the
non-RTIO driver through commit 67f80e3 ("i2c: stm32: always call
runtime_get when registering targets").

Signed-off-by: Etienne Carriere <[email protected]>
(cherry picked from commit 181e544)

Author: etienne-lms

drivers/i2c/i2c_ll_stm32_v2_rtio.c

@@ -210,9 +210,10 @@ int i2c_stm32_target_register(const struct device *dev,
 	}
 
 #if defined(CONFIG_PM_DEVICE_RUNTIME)
+	/* Mark device as active */
+	(void)pm_device_runtime_get(dev);
+
 	if (pm_device_wakeup_is_capable(dev)) {
-		/* Mark device as active */
-		(void)pm_device_runtime_get(dev);
 		/* Enable wake-up from stop */
 		LOG_DBG("i2c: enabling wakeup from stop");
 		LL_I2C_EnableWakeUpFromStop(cfg->i2c);
@@ -303,11 +304,12 @@ int i2c_stm32_target_unregister(const struct device *dev,
 		/* Disable wake-up from STOP */
 		LOG_DBG("i2c: disabling wakeup from stop");
 		LL_I2C_DisableWakeUpFromStop(i2c);
-		/* Release the device */
-		(void)pm_device_runtime_put(dev);
 	}
 #endif /* defined(CONFIG_PM_DEVICE_RUNTIME) */
 
+	/* Release the device */
+	(void)pm_device_runtime_put(dev);
+
 	data->slave_attached = false;
 
 	return 0;