drivers/acpi/glue: revert accidental license-related 6b66d958 bits

Commit 6b66d958 should not have changed
EXPORT_SYMBOL_GPL to EXPORT_SYMBOL.
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

drivers/acpi/glue.c

@@ -39,7 +39,7 @@ int register_acpi_bus_type(struct acpi_bus_type *type)
 	}
 	return -ENODEV;
 }
-EXPORT_SYMBOL(register_acpi_bus_type);
+EXPORT_SYMBOL_GPL(register_acpi_bus_type);
 
 int unregister_acpi_bus_type(struct acpi_bus_type *type)
 {
@@ -55,7 +55,7 @@ int unregister_acpi_bus_type(struct acpi_bus_type *type)
 	}
 	return -ENODEV;
 }
-EXPORT_SYMBOL(unregister_acpi_bus_type);
+EXPORT_SYMBOL_GPL(unregister_acpi_bus_type);
 
 static struct acpi_bus_type *acpi_get_bus_type(struct bus_type *type)
 {