drivers/rtc/Makefile: keep list sorted

Signed-off-by: Wolfgang Denk <wd@denx.de>

drivers/rtc/Makefile

@@ -27,8 +27,8 @@ include $(TOPDIR)/config.mk
 
 LIB	= $(obj)librtc.a
 
-COBJS-y += date.o
 COBJS-y += bfin_rtc.o
+COBJS-y += date.o
 COBJS-y += ds12887.o
 COBJS-y += ds1302.o
 COBJS-y += ds1306.o
@@ -39,21 +39,21 @@ COBJS-y += ds1556.o
 COBJS-y += ds164x.o
 COBJS-y += ds174x.o
 COBJS-y += ds3231.o
+COBJS-$(CONFIG_RTC_ISL1208) += isl1208.o
 COBJS-y += m41t11.o
 COBJS-y += m41t60.o
-COBJS-y += max6900.o
 COBJS-y += m48t35ax.o
+COBJS-y += max6900.o
 COBJS-y += mc146818.o
+COBJS-y += mcfrtc.o
 COBJS-y += mk48t59.o
 COBJS-y += mpc5xxx.o
 COBJS-y += mpc8xx.o
 COBJS-y += pcf8563.o
-COBJS-y += s3c24x0_rtc.o
 COBJS-y += rs5c372.o
 COBJS-y += rx8025.o
-COBJS-y += mcfrtc.o
+COBJS-y += s3c24x0_rtc.o
 COBJS-y += x1205.o
-COBJS-$(CONFIG_RTC_ISL1208) += isl1208.o
 
 COBJS	:= $(COBJS-y)
 SRCS	:= $(COBJS:.o=.c)