powerpc/eeh: Output PHB diag-data

When hitting frozen PE or fenced PHB, it's always indicative to
have dumped PHB diag-data for further analysis and diagnosis.
However, we never dump that for the cases. The patch intends to
dump PHB diag-data at the backend of eeh_ops::get_log() for PowerNV
platform.

Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

arch/powerpc/platforms/powernv/eeh-ioda.c

@@ -588,11 +588,8 @@ static int ioda_eeh_get_log(struct eeh_pe *pe, int severity,
 		return -EIO;
 	}
 
-	/*
+	/* The PHB diag-data is always indicative */
-	 * FIXME: We probably need log the error in somewhere.
+	pnv_pci_dump_phb_diag_data(hose, phb->diag.blob);
-	 * Lets make it up in future.
-	 */
-	/* pr_info("%s", phb->diag.blob); */
 
 	spin_unlock_irqrestore(&phb->lock, flags);