Callout support for SBE when watchdog times out

This commit provides additional callout support for SBE when the
host does not respond within watchdog timeout interval during SBE
boot window.

Testi

Callout support for SBE when watchdog times out

This commit provides additional callout support for SBE when the
host does not respond within watchdog timeout interval during SBE
boot window.

Testing:
Steps used:
1. obmcutil poweroff
2. istep -s0
3. systemctl start org.open_power.Dump.Manager.service
4. systemctl start openpower-debug-collector-watchdog@0.service
5. Check the journal log, and get the PEL id to print PEL info

PEL info:
"Callout Section": {
"Callout Count": "2",
"Callouts": [{
"FRU Type": "Maintenance Procedure Required",
"Priority": "Mandatory, replace all with this type
as a unit",
"Procedure": "BMC0002"
}, {
"FRU Type": "Normal Hardware FRU",
"Priority": "Medium Priority",
"Location Code": "xxxxxxxxxxxxx",
"Part Number": "xxxxx",
"CCIN": "xxxx",
"Serial Number": "xxxxxxx"
}
...
"User Data 2": {
"Section Version": "1",
"Sub-section type": "1",
"Created by": "0x2000",
"Data": [
{
"Priority": "H",
"Procedure": "BMC0002"
},
{
"Deconfigured": false,
"Guarded": false,
"LocationCode": "Ufcs-xx-xxx",
"Priority": "M"
}
]
}

Signed-off-by: Shantappa Teekappanavar <sbteeks@yahoo.com>
Change-Id: I5e182cb415a807d97c98812a6713905d39fdbc9a

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