Input: add missing MODULE_DESCRIPTION() macros

On x86, make allmodconfig && make W=1 C=1 reports:
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/input/touchscreen/cyttsp_i2c_common.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/input/misc/soc_button_array.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/input/matrix-keymap.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/input/vivaldi-fmap.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/input/tests/input_test.o

Add the missing invocation of the MODULE_DESCRIPTION() macro to all
files which have a MODULE_LICENSE().

This includes drivers/input/misc/sgi_btns.c which, although it did not
produce a warning with the x86 allmodconfig configuration, may cause
this warning with other configurations when either CONFIG_SGI_IP22 or
CONFIG_SGI_IP32 is enabled.

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

drivers/input/matrix-keymap.c

···
 }
 EXPORT_SYMBOL(matrix_keypad_build_keymap);
 
+MODULE_DESCRIPTION("Helpers for matrix keyboard bindings");
 MODULE_LICENSE("GPL");

drivers/input/misc/sgi_btns.c

···
 };
 module_platform_driver(sgi_buttons_driver);
 
+MODULE_DESCRIPTION("SGI Indy/O2 volume button interface driver");
 MODULE_LICENSE("GPL");

drivers/input/misc/soc_button_array.c

···
 };
 module_platform_driver(soc_button_driver);
 
+MODULE_DESCRIPTION("Windows-compatible SoC Button Array driver");
 MODULE_LICENSE("GPL");

drivers/input/tests/input_test.c

···
 kunit_test_suite(input_test_suite);
 
 MODULE_AUTHOR("Javier Martinez Canillas <[e-mail]>");
+MODULE_DESCRIPTION("KUnit test for the input core");
 MODULE_LICENSE("GPL");

drivers/input/touchscreen/cyttsp_i2c_common.c

···
 EXPORT_SYMBOL_GPL(cyttsp_i2c_write_block_data);
 
 
+MODULE_DESCRIPTION("Cypress TrueTouch(TM) Standard Product (TTSP) I2C touchscreen driver");
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Cypress");

drivers/input/vivaldi-fmap.c

···
 }
 EXPORT_SYMBOL_GPL(vivaldi_function_row_physmap_show);
 
+MODULE_DESCRIPTION("Helpers for ChromeOS Vivaldi keyboard function row mapping");
 MODULE_LICENSE("GPL");