Add IPMI coldReset command support

* Implement by calling dbus method for coldReset
* Optimize warmReset/coldReset code
* Be implemented with related changes in skeleton repository

Resolves openbmc/openbmc#437

Change-Id: Ia33805c73b5d345419918c467ef7b9cf6fbb246d
Signed-off-by: Nan Li <william.bjlinan@hotmail.com>
diff --git a/globalhandler.h b/globalhandler.h
index 608df3b..dcdb68d 100644
--- a/globalhandler.h
+++ b/globalhandler.h
@@ -6,7 +6,8 @@
 // Various GLOBAL operations under a single command.
 enum ipmi_global_control_cmds : uint8_t
 {
-IPMI_CMD_WARM_RESET 			   = 0x02,
+    IPMI_CMD_COLD_RESET = 0x02,
+    IPMI_CMD_WARM_RESET = 0x03,
 };
 
 #endif