board: ge: mx53ppd: Move check_time() to common location

We are going to be using check_time() on more than the mx53ppd, move this
function to a common location.

Signed-off-by: Martyn Welch <martyn.welch@collabora.co.uk>
diff --git a/board/ge/common/Makefile b/board/ge/common/Makefile
index 93e6c01..f5be11b 100644
--- a/board/ge/common/Makefile
+++ b/board/ge/common/Makefile
@@ -4,4 +4,4 @@
 # SPDX-License-Identifier:	GPL-2.0+
 #
 
-obj-y  := vpd_reader.o
+obj-y  := vpd_reader.o ge_common.o