m68k/mac: Use '030 reset method on SE/30

The comment says that calling the ROM routine doesn't work. But testing
shows that the 68030 fall-back reset method does work, so just use that.
Tested-by: Stan Johnson <userm57@yahoo.com>
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

arch/m68k/mac/misc.c

@@ -410,9 +410,8 @@ void mac_poweroff(void)
 
 void mac_reset(void)
 {
-	if (macintosh_config->adb_type == MAC_ADB_II) {
-		unsigned long flags;
-
+	if (macintosh_config->adb_type == MAC_ADB_II &&
+	    macintosh_config->ident != MAC_MODEL_SE30) {
 		/* need ROMBASE in booter */
 		/* indeed, plus need to MAP THE ROM !! */
 
@@ -422,17 +421,8 @@ void mac_reset(void)
 		/* works on some */
 		rom_reset = (void *) (mac_bi_data.rombase + 0xa);
 
-		if (macintosh_config->ident == MAC_MODEL_SE30) {
-			/*
-			 * MSch: Machines known to crash on ROM reset ...
-			 */
-		} else {
-			local_irq_save(flags);
-
-			rom_reset();
-
-			local_irq_restore(flags);
-		}
+		local_irq_disable();
+		rom_reset();
 #ifdef CONFIG_ADB_CUDA
 	} else if (macintosh_config->adb_type == MAC_ADB_EGRET ||
 	           macintosh_config->adb_type == MAC_ADB_CUDA) {