soc/amd/common/block/graphics: add GPU PCI ID for Barcelo

Also rename the existing PCI_DEVICE_ID_ATI_FAM19H_MODEL51H_GPU
definition to PCI_DEVICE_ID_ATI_FAM19H_MODEL51H_GPU_CEZANNE to clarify
that that is the one for Cezanne.

BUG=b:193888172

Change-Id: I1c5446c1517f2e0cd708d3275b08d2bce4be0ea8
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/56396
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Reviewed-by: Matt Papageorge <matthewpapa07@gmail.com>
Reviewed-by: Nikolai Vyssotski <nikolai.vyssotski@amd.corp-partner.google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/include/device/pci_ids.h b/src/include/device/pci_ids.h
index f3f16fb..24e8426 100644
--- a/src/include/device/pci_ids.h
+++ b/src/include/device/pci_ids.h
@@ -506,7 +506,8 @@
 #define PCI_DEVICE_ID_ATI_FAM17H_MODEL18H_GPU			0x15D8
 #define PCI_DEVICE_ID_ATI_FAM17H_MODEL60H_GPU			0x1636
 #define PCI_DEVICE_ID_ATI_FAM17H_MODEL68H_GPU			0x164C
-#define PCI_DEVICE_ID_ATI_FAM19H_MODEL51H_GPU			0x1638
+#define PCI_DEVICE_ID_ATI_FAM19H_MODEL51H_GPU_CEZANNE		0x1638
+#define PCI_DEVICE_ID_ATI_FAM19H_MODEL51H_GPU_BARCELO		0x15e7
 #define PCI_DEVICE_ID_ATI_FAM17H_MODEL18H_HDA0			0x15DE
 #define PCI_DEVICE_ID_ATI_FAM17H_MODEL60H_HDA0			0x1637