Fixing XBUS PG lookup to mark both E44D and E55D as valid entries
Fixing XBUS PG lookup to mark both E44D and E55D as valid entries

Currently, there are two version of the MVPD PG keyword:
- E44D == XBUS0 bad
- E45D and E55D == XBUS0 and 2 bad
Spec indicates that both iox (second nibble) and pbiox
(third nibble) are bad for sforza and monza type modules.
We support generically the following cases:
- 0xE50D --> xbus chiplet good
- 0xE40D --> xbus chiplet good
and rely solely on the pbiox as the Xbus target indicator
(0x0040, 0x0020, 0x0010) for all types of chips.

Change-Id: If7a3c128180321adab083f3e40f2dd0a645318e7
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/37007
Tested-by: Jenkins Server <8e3f934e4c44875bc48d33da3ea13d93ba9a233f@us.ibm.com>
Reviewed-by: Martin Gloff <df0a4963746ae04ab678d064fccc7ee68adfd751@us.ibm.com>
Tested-by: Jenkins OP Build CI <e610bd72261d3c0a48f1e8ae36832ab00774d426@us.ibm.com>
Tested-by: FSP CI Jenkins <aa9e4d9ac7cd25905e9c0dd36d4150516e73dd86@us.ibm.com>
Reviewed-by: William G. Hoffa <7dd6aa5e78423995d9d7c7ecada5b77ee07f88cc@us.ibm.com>
Reviewed-by: Dean Sanner <3b8f978f111a0718dcf88848e092ac780da17ab3@us.ibm.com>
Reviewed-by: Daniel M. Crowell <912029ca9254ac7b5854e56910561d682e1fa2d0@us.ibm.com>

open-power/hostboot,open-power/hostboot,open-power/hostboot,open-power/hostboot,open-power/hostboot