powerpc/ps3: Add rtc-ps3

Create a real RTC driver for PS3, and unhook the deprecated
ppc_md.[gs]et_rtc_time.

Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Acked-by: Alessandro Zummo <a.zummo@towertech.it>
Acked-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index fa66d10..b072826 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -741,4 +741,13 @@
 	  This driver can also be built as a module. If so, the module
 	  will be called rtc-mv.
 
+config RTC_DRV_PS3
+	tristate "PS3 RTC"
+	depends on PPC_PS3
+	help
+	  If you say yes here you will get support for the RTC on PS3.
+
+	  This driver can also be built as a module. If so, the module
+	  will be called rtc-ps3.
+
 endif # RTC_CLASS