Input: rk805-pwrkey - fix module autoloading

Add the module alias so the rk805-pwrkey driver will
autoload when built as a module.

Fixes: 5a35b85c ("Input: add power key driver for Rockchip RK805 PMIC")
Signed-off-by: Peter Robinson <pbrobinson@gmail.com>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://lore.kernel.org/r/20220612225437.3628788-1-pbrobinson@gmail.comSigned-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

drivers/input/misc/rk805-pwrkey.c

@@ -98,6 +98,7 @@ static struct platform_driver rk805_pwrkey_driver = {
 };
 module_platform_driver(rk805_pwrkey_driver);
 
+MODULE_ALIAS("platform:rk805-pwrkey");
 MODULE_AUTHOR("Joseph Chen <chenjh@rock-chips.com>");
 MODULE_DESCRIPTION("RK805 PMIC Power Key driver");
 MODULE_LICENSE("GPL");