[MIPS] DS1287: Add clockevent driver

Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 2e4ac65..e5a7c5d 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -81,6 +81,7 @@
 config MACH_DECSTATION
 	bool "DECstations"
 	select BOOT_ELF32
+	select CEVT_DS1287
 	select CEVT_R4K
 	select CSRC_IOASIC
 	select CSRC_R4K
@@ -770,6 +771,9 @@
 config CEVT_BCM1480
 	bool
 
+config CEVT_DS1287
+	bool
+
 config CEVT_GT641XX
 	bool