ARM: pxa/tosa-bt: add MODULE_LICENSE tag

Without this tag, we get a build warning:

WARNING: modpost: missing MODULE_LICENSE() in arch/arm/mach-pxa/tosa-bt.o

For completeness, I'm also adding author and description fields.

Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/arm/mach-pxa/tosa-bt.c

@@ -132,3 +132,7 @@ static struct platform_driver tosa_bt_driver = {
 	},
 };
 module_platform_driver(tosa_bt_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Dmitry Baryshkov");
+MODULE_DESCRIPTION("Bluetooth built-in chip control");