Staging: speakup: Use module_spk_synth

Macro module_spk_synth can be used for speakup drivers
whose init and exit paths does only module registrations.
So, here remove some boilerplate code by using
module_spk_synth.

Signed-off-by: Vaishali Thakkar <vthakkar1994@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/staging/speakup/speakup_dectlk.c b/drivers/staging/speakup/speakup_dectlk.c
index 69e7c2b..b5a23d4 100644
--- a/drivers/staging/speakup/speakup_dectlk.c
+++ b/drivers/staging/speakup/speakup_dectlk.c
@@ -306,18 +306,8 @@
 MODULE_PARM_DESC(ser, "Set the serial port for the synthesizer (0-based).");
 MODULE_PARM_DESC(start, "Start the synthesizer once it is loaded.");
 
-static int __init dectlk_init(void)
-{
-	return synth_add(&synth_dectlk);
-}
+module_spk_synth(synth_dectlk);
 
-static void __exit dectlk_exit(void)
-{
-	synth_remove(&synth_dectlk);
-}
-
-module_init(dectlk_init);
-module_exit(dectlk_exit);
 MODULE_AUTHOR("Kirk Reiser <kirk@braille.uwo.ca>");
 MODULE_AUTHOR("David Borowski");
 MODULE_DESCRIPTION("Speakup support for DECtalk Express synthesizers");