[Feature][S300][task-view-902][project] add s300 common project

Change-Id: I5e0ce7e50fb0b968befef03ad42bae55f43287d6
diff --git a/Makefile b/Makefile
index 8c92b2f..4280315 100755
--- a/Makefile
+++ b/Makefile
@@ -47,6 +47,7 @@
 	@echo example R307 : make AP_PRJ=prj_cpe_min BOOT_PRJ=ufi_mini PACK_PRJ=prj_cpe PATH_PRJ=lynq/R307
 	@echo example S300 : make AP_PRJ=prj_mifi_min BOOT_PRJ=mifi_mini_64 PACK_PRJ=prj_mifi PATH_PRJ=lynq/S300
 	@echo example MD310 : make AP_PRJ=prj_cpe_min BOOT_PRJ=ufi_mini PACK_PRJ=prj_cpe PATH_PRJ=lynq/MD310
+	@echo example S300_COMMON : make AP_PRJ=prj_mifi_min BOOT_PRJ=mifi_mini_64 PACK_PRJ=prj_mifi PATH_PRJ=lynq/S300_COMMON
 	@echo The default value of AP_PRJ is prj_cpe_min. The following values are optional :
 	@ls ap/project/zx297520v3/*/ -d | xargs -I {} basename "{}" | tr '\n' '   '
 	@echo