Firmware update commmands re-write

Firmware update commands re-write
 * Updated to new API style
 * Coding guidelines for all names
 * Restricted few commands for PFR
 * Few updates as per new OpenBMC EPS
 * Changes for fw update status
 * Removed legacy API's used for FW update

Tested:
 - Tested firmware update using fwpiaupd.efi tool
   in usb and kcs trasfer mode.
 - Tested all firmware update commands over LAN.

Change-Id: I666cb139b2ca61d352e1cb6b1c18d045b7b1f197
Signed-off-by: AppaRao Puli <apparao.puli@linux.intel.com>
diff --git a/include/oemcommands.hpp b/include/oemcommands.hpp
index a382716..a6ece9c 100644
--- a/include/oemcommands.hpp
+++ b/include/oemcommands.hpp
@@ -52,6 +52,7 @@
 static constexpr Cmd cmdSetShutdownPolicy = 0x60;
 static constexpr Cmd cmdGetShutdownPolicy = 0x62;
 static constexpr Cmd cmdGetMultiNodePresence = 0x63;
+static constexpr Cmd cmdGetBufferSize = 0x66;
 static constexpr Cmd cmdSetFanConfig = 0x89;
 static constexpr Cmd cmdGetFanConfig = 0x8a;
 static constexpr Cmd cmdSetFanSpeedOffset = 0x8c;