phb4: Only set one bit in nfir
The MPIPL procedure says to only set bit 26 when forcing the PEC into
freeze mode. Currently we set bits 24-27.
This changes the code to follow spec and only set bit 26.
@@ -2405,7 +2405,7 @@ static int64_t phb4_creset(struct pci_slot *slot)
/* Force fence on the PHB to work around a non-existent PE */
if (!phb4_fenced(p))
xscom_write(p->chip_id, p->pe_stk_xscom + 0x2,
- 0x000000f000000000);
+ 0x0000002000000000);
/*
* Force use of ASB for register access until the PHB has
