IPMI OEM command: get/set NMI source

this Change is to implement IPMI OEM command: Get/Set NMI source,
for getting NMI source command: it's to get last NMI signal source
as the command response.(NetFn: 0x30, Cmd: 0xe5)
for Setting NMI source command: it's to set the NMI signal.
(NetFn: 0x30, Cmd: 0xed, parameter: NMI signal source)

Tested
it's tested in system for IPMI OEM command - get/set NMI source
Get: ipmitool raw 0x30 0xe5
Set: ipmitool raw 0x30 0xed 1

Change-Id: I8f9f5352a7cbf6663c0264931ff46f63fa495f0c
Signed-off-by: Chen,Yugang <yugang.chen@linux.intel.com>
diff --git a/include/oemcommands.hpp b/include/oemcommands.hpp
index e0e6903..b0aea02 100644
--- a/include/oemcommands.hpp
+++ b/include/oemcommands.hpp
@@ -42,6 +42,8 @@
     cmdGetProcessorErrConfig = 0x9A,
     cmdSetProcessorErrConfig = 0x9B,
     cmdGetLEDStatus = 0xB0,
+    cmdGetNmiStatus = 0xE5,
+    cmdSetNmiStatus = 0xED,
 };
 
 enum class IPMINetfnIntelOEMPlatformCmd