[Feature]Upload Modem source code

Change-Id: Id4294f30faced84d3e6fd6d5e61e1111bf287a37
diff --git a/mcu/driver/peripheral/inc/rtc_sw.h b/mcu/driver/peripheral/inc/rtc_sw.h
new file mode 100644
index 0000000..c94e373
--- /dev/null
+++ b/mcu/driver/peripheral/inc/rtc_sw.h
@@ -0,0 +1 @@
+/* Empty */
\ No newline at end of file