IntelFsp2Pkg: Add YAML file generation support

REF:https://bugzilla.tianocore.org/show_bug.cgi?id=3091

Add support for YAML format file generation in addition
to current BSF structure. Configuration of YAML format
output will be supported by an open source ConfigEditor.

Reference to YAML code, test and ConfigEditor is at
https://github.com/joshloo/fsp_yaml_cfg/tree/master/Tools

A unit test is also added in Tests folder. This test compares
the generated yaml file against the expected output to know
if it is constructing the yaml data structure as expected.

Cc: Maurice Ma <maurice.ma@intel.com>
Cc: Nate DeSimone <nathaniel.l.desimone@intel.com>
Cc: Star Zeng <star.zeng@intel.com>
Cc: Chasel Chiu <chasel.chiu@intel.com>
Signed-off-by: Loo Tung Lun <tung.lun.loo@intel.com>
Reviewed-by: Chasel Chiu <chasel.chiu@intel.com>

IntelFsp2Pkg/Tools/Tests/ExpectedFspUpd.h

@@ -0,0 +1,16 @@
+#ifndef __FSPUPD_H__
+#define __FSPUPD_H__
+
+#include <FspEas.h>
+
+#pragma pack(1)
+
+#define FSPT_UPD_SIGNATURE               0x545F4450554D4551        /* 'QEMUPD_T' */
+
+#define FSPM_UPD_SIGNATURE               0x4D5F4450554D4551        /* 'QEMUPD_M' */
+
+#define FSPS_UPD_SIGNATURE               0x535F4450554D4551        /* 'QEMUPD_S' */
+
+#pragma pack()
+
+#endif