board: ge: common: rename ge_common.c to ge_rtc.c

The file only contains RTC related code, so let's name
it accordingly.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>

board/ge/bx50v3/bx50v3.c

@@ -35,7 +35,7 @@
 #include <version.h>
 #include <stdlib.h>
 #include <dm/root.h>
-#include "../common/ge_common.h"
+#include "../common/ge_rtc.h"
 #include "../common/vpd_reader.h"
 #include "../../../drivers/net/e1000.h"
 #include <pci.h>

board/ge/common/Makefile

@@ -2,4 +2,4 @@
 #
 # Copyright 2017 General Electric Company
 
-obj-y  := vpd_reader.o ge_common.o
+obj-y  := vpd_reader.o ge_rtc.o

board/ge/mx53ppd/mx53ppd.c

@@ -36,7 +36,7 @@
 #include <watchdog.h>
 #include "ppd_gpio.h"
 #include <stdlib.h>
-#include "../../ge/common/ge_common.h"
+#include "../../ge/common/ge_rtc.h"
 #include "../../ge/common/vpd_reader.h"
 
 DECLARE_GLOBAL_DATA_PTR;