iohub: Add HUB ID for everest systems

Everest's hub id is 0x52, which OPAL earlier didn't recognise:

    [  574.179390090,6] CEC: HUB FRU 0 is CPU Card
    [  574.179430286,6] CEC:   2 chips in FRU
    [  574.179464930,7] CEC:   IO Hub Chip #0 OK
    [  574.179497312,7] CEC:   PChip: 0 HUB ID: 0052 [EC=0x20] Hub#=0)
    [  574.179543358,3] CEC:     Hub ID 0x0052 unsupported !    <--------

Due to not recognising the HUB id, it doesn't initialise the PCI slots.

Define 0x52 as Everest's hub id, so OPAL initialises PCIe slots also for
Everest

Signed-off-by: Aditya Gupta <[email protected]>
Acked-by: Nicholas Piggin <[email protected]>
Signed-off-by: Reza Arbab <[email protected]>

Author: adi-g15-ibm

hdata/iohub.c

@@ -843,6 +843,10 @@ static void io_parse_fru(const void *sp_iohubs)
 			prlog(PR_INFO, "CEC:     Rainier !\n");
 			io_add_p9(hub, sp_iohubs);
 			break;
+		case CECHUB_HUB_EVEREST:
+			prlog(PR_INFO, "CEC:     Everest !\n");
+			io_add_p9(hub, sp_iohubs);
+			break;
 		case CECHUB_HUB_DENALI:
 			prlog(PR_INFO, "CEC:     Denali !\n");
 			io_add_p9(hub, sp_iohubs);

hdata/spira.h

@@ -613,6 +613,7 @@ struct cechub_io_hub {
 #define CECHUB_HUB_AXONE_HOPPER		0x0040	/* axone+hopper */
 #define CECHUB_HUB_RAINIER		0x0050
 #define CECHUB_HUB_DENALI		0x0051
+#define CECHUB_HUB_EVEREST		0x0052
 	__be32		ec_level;
 	__be32		aff_dom2;	/* HDAT < v9.x only */
 	__be32		aff_dom3;	/* HDAT < v9.x only */