drivers: serial: correct spelling

Employ a code spell checking tool to scan and correct spelling errors
in all files within the drivers/serial directory.

Signed-off-by: Pisit Sawangvonganan <pisit@ndrsolution.com>
diff --git a/drivers/serial/uart_stm32.c b/drivers/serial/uart_stm32.c
index 6383435..c785c1e 100644
--- a/drivers/serial/uart_stm32.c
+++ b/drivers/serial/uart_stm32.c
@@ -567,7 +567,7 @@
 
 	LL_USART_Disable(config->usart);
 
-	/* Set basic parmeters, such as data-/stop-bit, parity, and baudrate */
+	/* Set basic parameters, such as data-/stop-bit, parity, and baudrate */
 	uart_stm32_parameters_set(dev, cfg);
 
 	LL_USART_Enable(config->usart);
@@ -1913,7 +1913,7 @@
 	LL_USART_SetTransferDirection(config->usart,
 				      LL_USART_DIRECTION_TX_RX);
 
-	/* Set basic parmeters, such as data-/stop-bit, parity, and baudrate */
+	/* Set basic parameters, such as data-/stop-bit, parity, and baudrate */
 	uart_stm32_parameters_set(dev, uart_cfg);
 
 	/* Enable the single wire / half-duplex mode */