powerpc: fix hvc-rtas comments

[Arnd Bergmann <arnd.bergmann@de.ibm.com>]

As notice by Olof Johansson, the comment about module_exit
in hvc_rtas is rather confusing, so remove it.

Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>

---
Index: linus-2.6/drivers/char/hvc_rtas.c
===================================================================
--- linus-2.6.orig/drivers/char/hvc_rtas.c
+++ linus-2.6/drivers/char/hvc_rtas.c
@@ -119,7 +119,7 @@ static void __exit hvc_rtas_exit(void)
 	if (hvc_rtas_dev)
 		hvc_remove(hvc_rtas_dev);
 }
-module_exit(hvc_rtas_exit); /* before drivers/char/hvc_console.c */
+module_exit(hvc_rtas_exit);
 
 /* This will happen prior to module init.  There is no tty at this time? */
 static int hvc_rtas_console_init(void)
-
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