drivers/macintosh: Various cleanups

This contains the following cleanups:
- make the following needlessly global code static:
  - adb.c: adb_controller
  - adb.c: adb_init()
  - adbhid.c: adb_to_linux_keycodes[]  (also make it const)
  - via-pmu68k.c: backlight_level
  - via-pmu68k.c: backlight_enabled
- remove the following unused code:
  - via-pmu68k.c: sleep_notifier_list

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/drivers/macintosh/adb.c b/drivers/macintosh/adb.c
index dbaad39..61b62a6 100644
--- a/drivers/macintosh/adb.c
+++ b/drivers/macintosh/adb.c
@@ -46,7 +46,6 @@
 #endif
 
 
-EXPORT_SYMBOL(adb_controller);
 EXPORT_SYMBOL(adb_client_list);
 
 extern struct adb_driver via_macii_driver;
@@ -80,7 +79,7 @@
 
 static struct class *adb_dev_class;
 
-struct adb_driver *adb_controller;
+static struct adb_driver *adb_controller;
 BLOCKING_NOTIFIER_HEAD(adb_client_list);
 static int adb_got_sleep;
 static int adb_inited;
@@ -290,7 +289,7 @@
 }
 #endif /* CONFIG_PM */
 
-int __init adb_init(void)
+static int __init adb_init(void)
 {
 	struct adb_driver *driver;
 	int i;