char: use SGI_HAS_DS1286 for SGI_DS1286 depends

Use SGI_HAS_DS1286 for SGI_DS1286 depends
Signed-off-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

drivers/char/Kconfig

@@ -765,7 +765,7 @@ config JS_RTC
 
 config SGI_DS1286
 	tristate "SGI DS1286 RTC support"
-	depends on SGI_IP22
+	depends on SGI_HAS_DS1286
 	help
 	  If you say Y here and create a character special file /dev/rtc with
 	  major number 10 and minor number 135 using mknod ("man mknod"), you