Add support for IPMI GetChassisStatus command

* Factor response to explicitly commented fields
* Add GetChassisStatus command to whilelist

Note: some fields need furture work.

Resolves openbmc/openbmc#439

Change-Id: I7a8d6bfe384f2621c157db379680921db4756fcc
Signed-off-by: Nan Li <william.bjlinan@hotmail.com>
diff --git a/chassishandler.h b/chassishandler.h
index b290f21..36958c5 100644
--- a/chassishandler.h
+++ b/chassishandler.h
@@ -8,6 +8,8 @@
 enum ipmi_netfn_app_cmds
 {
     IPMI_CMD_GET_CHASSIS_CAP      = 0x00,
+    // Chassis Status
+    IPMI_CMD_CHASSIS_STATUS       = 0x01,
 	// Chassis Control
 	IPMI_CMD_CHASSIS_CONTROL	  = 0x02,
     // Get capability bits