tty: add missing MODULE_DESCRIPTION() macros

make allmodconfig && make W=1 C=1 reports:
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/tty/serial/8250/8250_base.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/tty/serial/8250/8250_pxa.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/tty/serial/8250/serial_cs.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/tty/serial/esp32_uart.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/tty/serial/esp32_acm.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/tty/serial/owl-uart.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/tty/n_hdlc.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/tty/n_gsm.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/tty/ttynull.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/tty/goldfish.o

Add all missing invocations of the MODULE_DESCRIPTION() macro.

Signed-off-by: Jeff Johnson <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/tty/amiserial.c

···
 
 #endif /* CONFIG_SERIAL_CONSOLE && !MODULE */
 
+MODULE_DESCRIPTION("Serial driver for the amiga builtin port");
 MODULE_LICENSE("GPL");
 MODULE_ALIAS("platform:amiga-serial");

drivers/tty/goldfish.c

···
 
 module_platform_driver(goldfish_tty_platform_driver);
 
+MODULE_DESCRIPTION("Goldfish TTY Driver");
 MODULE_LICENSE("GPL v2");

drivers/tty/n_gsm.c

···
 module_exit(gsm_exit);
 
 
+MODULE_DESCRIPTION("GSM 0710 tty multiplexor");
 MODULE_LICENSE("GPL");
 MODULE_ALIAS_LDISC(N_GSM0710);

drivers/tty/n_hdlc.c

···
 module_init(n_hdlc_init);
 module_exit(n_hdlc_exit);
 
+MODULE_DESCRIPTION("HDLC line discipline support");
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Paul Fulghum [e-mail]");
 module_param(maxframe, int, 0);

drivers/tty/serial/8250/8250_parisc.c

···
 
 module_init(probe_serial_gsc);
 
+MODULE_DESCRIPTION("Serial Device Initialisation for Lasi/Asp/Wax/Dino");
 MODULE_LICENSE("GPL");

drivers/tty/serial/8250/8250_pcilib.c

···
 	return 0;
 }
 EXPORT_SYMBOL_NS_GPL(serial8250_pci_setup_port, SERIAL_8250_PCI);
+MODULE_DESCRIPTION("8250 PCI library");
 MODULE_LICENSE("GPL");

drivers/tty/serial/8250/8250_port.c

···
 
 #endif /* CONFIG_SERIAL_8250_CONSOLE */
 
+MODULE_DESCRIPTION("Base port operations for 8250/16550-type serial ports");
 MODULE_LICENSE("GPL");

drivers/tty/serial/8250/8250_pxa.c

···
 #endif
 
 MODULE_AUTHOR("Sergei Ianovich");
+MODULE_DESCRIPTION("driver for PXA on-board UARTS");
 MODULE_LICENSE("GPL");
 MODULE_ALIAS("platform:pxa2xx-uart");

drivers/tty/serial/8250/serial_cs.c

···
 };
 module_pcmcia_driver(serial_cs_driver);
 
+MODULE_DESCRIPTION("driver for PCMCIA serial devices");
 MODULE_LICENSE("GPL");

drivers/tty/serial/esp32_acm.c

···
 module_exit(esp32s3_acm_exit);
 
 MODULE_AUTHOR("Max Filippov <[e-mail]>");
+MODULE_DESCRIPTION("Espressif ESP32 USB ACM gadget support");
 MODULE_LICENSE("GPL");

drivers/tty/serial/esp32_uart.c

···
 module_exit(esp32_uart_exit);
 
 MODULE_AUTHOR("Max Filippov <[e-mail]>");
+MODULE_DESCRIPTION("Espressif ESP32 UART support");
 MODULE_LICENSE("GPL");

drivers/tty/serial/owl-uart.c

···
 module_init(owl_uart_init);
 module_exit(owl_uart_exit);
 
+MODULE_DESCRIPTION("Actions Semi Owl family serial console");
 MODULE_LICENSE("GPL");

drivers/tty/serial/serial_mctrl_gpio.c

···
 }
 EXPORT_SYMBOL_GPL(mctrl_gpio_disable_irq_wake);
 
+MODULE_DESCRIPTION("Helpers for controlling modem lines via GPIO");
 MODULE_LICENSE("GPL");

drivers/tty/synclink_gt.c

···
  */
 static const char driver_name[] = "SyncLink GT";
 static const char tty_dev_prefix[] = "ttySLG";
+MODULE_DESCRIPTION("Device driver for Microgate SyncLink GT serial adapters");
 MODULE_LICENSE("GPL");
 #define MAX_DEVICES 32
 

drivers/tty/ttynull.c

···
 module_init(ttynull_init);
 module_exit(ttynull_exit);
 
+MODULE_DESCRIPTION("NULL TTY driver");
 MODULE_LICENSE("GPL v2");