drivers/rtc/rtc-efi.c: add missing module alias

Without proper alias kernel module is not loaded for rtc-efi driver.
Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
Cc: dann frazier <dannf@dannf.org>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/rtc/rtc-efi.c

@@ -232,6 +232,7 @@ static struct platform_driver efi_rtc_driver = {
 
 module_platform_driver_probe(efi_rtc_driver, efi_rtc_probe);
 
+MODULE_ALIAS("platform:rtc-efi");
 MODULE_AUTHOR("dann frazier <dannf@hp.com>");
 MODULE_LICENSE("GPL");
 MODULE_DESCRIPTION("EFI RTC driver");