VPD: vpdeccCheckData return code is being compared to wrong constant
VPD: vpdeccCheckData return code is being compared to wrong constant

The return code from calling the method vpdeccCheckData is being
compared to a reason code and not the correct VPD return code.
Changed the conditional to check against the VPD return code, the
VPD_ECC_CORRECTABLE_DATA constant.

Change-Id: If058d2813be1860cfa61a67e1934644b9f5ac452
Reviewed-on: http://rchgit01.rchland.ibm.com/gerrit1/125449
Tested-by: Jenkins OP Build CI <e610bd72261d3c0a48f1e8ae36832ab00774d426@us.ibm.com>
Tested-by: Jenkins Server <8e3f934e4c44875bc48d33da3ea13d93ba9a233f@us.ibm.com>
Tested-by: Jenkins Combined Simics CI <8312af3886dfc9bb930f549023677220805b137e@us.ibm.com>
Tested-by: FSP CI Jenkins <aa9e4d9ac7cd25905e9c0dd36d4150516e73dd86@us.ibm.com>
Tested-by: Jenkins OP HW <0eb0fff262f74a65a832afbcc7b153e391c9a3fd@us.ibm.com>
Tested-by: Hostboot CI <52521565bd8ea18a2b112942dce4f4220a97c2c8@us.ibm.com>
Reviewed-by: Ilya Smirnov <2c7a6ec38cfb553b896499595cca9c656159f2a4@us.ibm.com>
Reviewed-by: Matthew Raybuck <9bcecd56bb1097e934e4548e2b924569df303f40@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