hwmon: (abituguru) Depend on DMI

The abituguru drivers are only built on X86, where DMI support is now
enabled by default. So let these drivers depend on DMI, for the
following gains:
* Robustness and safety. Detection of these devices is weak and uses
  non-standard methods, it should really be limited to Abit boards
  unless the user explicitly asks otherwise.
* Code simplicity. The code is easier to read without ifdefs.
* Better build testing coverage. Now there's only one way to build the
  drivers, so no risk of build failure on exotic systems.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Guenter Roeck <guenter.roeck@ericsson.com>
Acked-by: Alistair John Strachan <alistair@devzero.co.uk>
Acked-by: Hans de Goede <hdegoede@redhat.com>

drivers/hwmon/abituguru3.c

@@ -1119,8 +1119,6 @@ static struct platform_driver abituguru3_driver = {
 	.resume = abituguru3_resume
 };
 
-#ifdef CONFIG_DMI
-
 static int __init abituguru3_dmi_detect(void)
 {
 	const char *board_vendor, *board_name;
@@ -1159,15 +1157,6 @@ static int __init abituguru3_dmi_detect(void)
 	return 1;
 }
 
-#else /* !CONFIG_DMI */
-
-static inline int abituguru3_dmi_detect(void)
-{
-	return 1;
-}
-
-#endif /* CONFIG_DMI */
-
 /* FIXME: Manual detection should die eventually; we need to collect stable
  *        DMI model names first before we can rely entirely on CONFIG_DMI.
  */
@@ -1216,10 +1205,8 @@ static int __init abituguru3_init(void)
 		if (err)
 			return err;
 
-#ifdef CONFIG_DMI
 		pr_warn("this motherboard was not detected using DMI. "
 			"Please send the output of \"dmidecode\" to the abituguru3 maintainer (see MAINTAINERS)\n");
-#endif
 	}
 
 	err = platform_driver_register(&abituguru3_driver);