[platform]: enable platform driver for dell s6000 (#5)

Author: lguohan

.gitmodules

@@ -41,7 +41,8 @@
 	url = https://github.com/Azure/sonic-utilities
 [submodule "platform/broadcom/sonic-platform-modules-s6000"]
 	path = platform/broadcom/sonic-platform-modules-s6000
-	url = https://github.com/Azure/sonic-platform-modules-s6000
+	url = https://github.com/lguohan/sonic-platform-modules-s6000
+	branch = stretch
 [submodule "platform/broadcom/sonic-platform-modules-arista"]
 	path = platform/broadcom/sonic-platform-modules-arista
 	url = https://github.com/aristanetworks/sonic

platform/broadcom/rules.mk

@@ -1,6 +1,6 @@
 include $(PLATFORM_PATH)/sdk.mk
 include $(PLATFORM_PATH)/sai.mk
-#include $(PLATFORM_PATH)/platform-modules-s6000.mk
+include $(PLATFORM_PATH)/platform-modules-s6000.mk
 #include $(PLATFORM_PATH)/platform-modules-dell.mk
 #include $(PLATFORM_PATH)/platform-modules-arista.mk
 #include $(PLATFORM_PATH)/platform-modules-ingrasys.mk