[nrf fromtree] drivers: serial: nrfx_uarte: Add missing closing bracket

A code ifdefed by UARTE_BAUDRATE_RETENTION_WORKAROUND was missing a
closing bracket. It was missed because CI did not compile any target
that is applying this workaround and enables code compilation.

Signed-off-by: Krzysztof Chruściński <[email protected]>
(cherry picked from commit a98bde9)

Author: nordic-krch

drivers/serial/uart_nrfx_uarte.c

@@ -2187,7 +2187,7 @@ static int uarte_nrfx_pm_action(const struct device *dev,
 #if UARTE_BAUDRATE_RETENTION_WORKAROUND
 		nrf_uarte_baudrate_set(get_uarte_instance(dev),
 			COND_CODE_1(CONFIG_UART_USE_RUNTIME_CONFIGURE,
-				(data->nrf_baudrate), (cfg->nrf_baudrate));
+				(data->nrf_baudrate), (cfg->nrf_baudrate)));
 #endif
 
 #ifdef UARTE_ANY_ASYNC