serial: zynq: Fix incorrect reference to s5p driver

Remove this c&p error from s5p driver.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

drivers/serial/Kconfig

@@ -95,7 +95,7 @@ config DEBUG_UART_S5P
 config DEBUG_UART_ZYNQ
 	bool "Xilinx Zynq"
 	help
-	  Select this to enable a debug UART using the serial_s5p driver. You
+	  Select this to enable a debug UART using the serial_zynq driver. You
 	  will need to provide parameters to make this work. The driver will
 	  be available until the real driver-model serial is running.
 

drivers/serial/serial_zynq.c

@@ -180,7 +180,7 @@ static const struct udevice_id zynq_serial_ids[] = {
 	{ }
 };
 
-U_BOOT_DRIVER(serial_s5p) = {
+U_BOOT_DRIVER(serial_zynq) = {
 	.name	= "serial_zynq",
 	.id	= UCLASS_SERIAL,
 	.of_match = zynq_serial_ids,