serial: max3100: Make struct plat_max3100 local

There is no user of the struct plat_max3100 outside the driver.
Inline its contents into the driver. While at it, drop outdated
example in the comment.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20240402195306.269276-5-andriy.shevchenko@linux.intel.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/tty/serial/max3100.c

 // SPDX-License-Identifier: GPL-2.0+
 /*
- *
  *  Copyright (C) 2008 Christian Pellegrin <chripell@evolware.org>
  *
  * Notes: the MAX3100 doesn't provide an interrupt on CTS so we have
@@ -8,24 +7,6 @@
  * writing conf clears FIFO buffer and we cannot have this interrupt
  * always asking us for attention.
  *
- * Example platform data:
-
- static struct plat_max3100 max3100_plat_data = {
- .loopback = 0,
- .crystal = 0,
- .poll_time = 100,
- };
-
- static struct spi_board_info spi_board_info[] = {
- {
- .modalias	= "max3100",
- .platform_data	= &max3100_plat_data,
- .irq		= IRQ_EINT12,
- .max_speed_hz	= 5*1000*1000,
- .chip_select	= 0,
- },
- };
-
  * The initial minor number is 209 in the low-density serial port:
  * mknod /dev/ttyMAX0 c 204 209
  */
@@ -49,7 +30,24 @@
 
 #include <asm/unaligned.h>
 
-#include <linux/serial_max3100.h>
+/**
+ * struct plat_max3100 - MAX3100 SPI UART platform data
+ * @loopback:            force MAX3100 in loopback
+ * @crystal:             1 for 3.6864 Mhz, 0 for 1.8432
+ * @max3100_hw_suspend:  MAX3100 has a shutdown pin. This is a hook
+ *                       called on suspend and resume to activate it.
+ * @poll_time:           poll time for CTS signal in ms, 0 disables (so no hw
+ *                       flow ctrl is possible but you have less CPU usage)
+ *
+ * You should use this structure in your machine description to specify
+ * how the MAX3100 is connected.
+ */
+struct plat_max3100 {
+	int loopback;
+	int crystal;
+	void (*max3100_hw_suspend) (int suspend);
+	int poll_time;
+};
 
 #define MAX3100_C    (1<<14)
 #define MAX3100_D    (0<<14)

include/linux/serial_max3100.h

-/* SPDX-License-Identifier: GPL-2.0-or-later */
-/*
- *
- *  Copyright (C) 2007 Christian Pellegrin
- */
-
-
-#ifndef _LINUX_SERIAL_MAX3100_H
-#define _LINUX_SERIAL_MAX3100_H 1
-
-
-/**
- * struct plat_max3100 - MAX3100 SPI UART platform data
- * @loopback:            force MAX3100 in loopback
- * @crystal:             1 for 3.6864 Mhz, 0 for 1.8432
- * @max3100_hw_suspend:  MAX3100 has a shutdown pin. This is a hook
- *                       called on suspend and resume to activate it.
- * @poll_time:           poll time for CTS signal in ms, 0 disables (so no hw
- *                       flow ctrl is possible but you have less CPU usage)
- *
- * You should use this structure in your machine description to specify
- * how the MAX3100 is connected. Example:
- *
- * static struct plat_max3100 max3100_plat_data = {
- *  .loopback = 0,
- *  .crystal = 0,
- *  .poll_time = 100,
- * };
- *
- * static struct spi_board_info spi_board_info[] = {
- * {
- *  .modalias	= "max3100",
- *  .platform_data	= &max3100_plat_data,
- *  .irq		= IRQ_EINT12,
- *  .max_speed_hz	= 5*1000*1000,
- *  .chip_select	= 0,
- * },
- * };
- *
- **/
-struct plat_max3100 {
-	int loopback;
-	int crystal;
-	void (*max3100_hw_suspend) (int suspend);
-	int poll_time;
-};
-
-#endif