PEL: Print action flags into JSON aligned

"User Header": {
    "Section Version":          "1",
    "Sub-section type":         "0",
    "Log Committed by":         "0x4552",
    "Subsystem":                "System Hypervisor Firmware",
    "Event Scope":              "Entire Platform",
    "Event Severity":           "Informational Event",
    "Event Type":               "Miscellaneous, Informational Only",
    "Action Flags": [
                                "Report Externally"
    ]
}

Testing: Manually run peltool and verified output
Signed-off-by: Harisuddin Mohamed Isa <harisuddin@gmail.com>
Change-Id: Ie8376953b5f1baa093fc0aa9564d50cd4208564e
diff --git a/extensions/openpower-pels/openpower-pels.mk b/extensions/openpower-pels/openpower-pels.mk
index 5bce70d..d974e06 100644
--- a/extensions/openpower-pels/openpower-pels.mk
+++ b/extensions/openpower-pels/openpower-pels.mk
@@ -18,7 +18,7 @@
 	extensions/openpower-pels/failing_mtms.cpp \
 	extensions/openpower-pels/fru_identity.cpp \
 	extensions/openpower-pels/generic.cpp \
-	extensions/openpower-pels/hexdump.cpp \
+	extensions/openpower-pels/json_utils.cpp \
 	extensions/openpower-pels/log_id.cpp \
 	extensions/openpower-pels/mru.cpp \
 	extensions/openpower-pels/mtms.cpp \