soc/intel/skylake: Add new Northbridge and IGD IDs

This patch adds support
1) Intel(R) Xeon(R) E3 - 1200/1500 v5/6th Gen Intel(R) Core(TM) Host
Bridge/DRAM Registers - 191F;
2) HD Graphics 530 Skylake GT2 - Intel integrated graphics processor
https://en.wikichip.org/wiki/intel/hd_graphics/530.

This is required to run coreboot on the Intel Core i5-6600 (Skylake)
desktop processor. It has been tested on ASRock H110M-DVS motherboard.

Change-Id: If47e9ac32813a9f73d3a23f44536f60d1003971d
Signed-off-by: Maxim Polyakov <max.senia.poliak@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/31601
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/include/device/pci_ids.h

@@ -2996,6 +2996,7 @@
 
 /* Intel IGD device Ids */
 #define PCI_DEVICE_ID_INTEL_SKL_GT1_SULTM		0x1906
+#define PCI_DEVICE_ID_INTEL_SKL_GT2_DT2P1		0x1912
 #define PCI_DEVICE_ID_INTEL_SKL_GT2_SULXM		0x191E
 #define PCI_DEVICE_ID_INTEL_SKL_GT2_SULTM		0x1916
 #define PCI_DEVICE_ID_INTEL_SKL_GT2_SHALM		0x191B
@@ -3069,6 +3070,7 @@
 #define PCI_DEVICE_ID_INTEL_SKL_ID_H	0x1910
 #define PCI_DEVICE_ID_INTEL_KBL_ID_S	0x590f
 #define PCI_DEVICE_ID_INTEL_SKL_ID_H_EM	0x1918
+#define PCI_DEVICE_ID_INTEL_SKL_ID_DT	0x191f
 #define PCI_DEVICE_ID_INTEL_KBL_ID_U	0x5904
 #define PCI_DEVICE_ID_INTEL_KBL_ID_Y	0x590c
 #define PCI_DEVICE_ID_INTEL_KBL_ID_H	0x5910

src/soc/intel/common/block/graphics/graphics.c

@@ -129,6 +129,7 @@ static const unsigned short pci_device_ids[] = {
 	PCI_DEVICE_ID_INTEL_KBL_GT2_DT2P2,
 	PCI_DEVICE_ID_INTEL_AML_GT2_ULX,
 	PCI_DEVICE_ID_INTEL_SKL_GT1_SULTM,
+	PCI_DEVICE_ID_INTEL_SKL_GT2_DT2P1,
 	PCI_DEVICE_ID_INTEL_SKL_GT2_SULXM,
 	PCI_DEVICE_ID_INTEL_SKL_GT2_SULTM,
 	PCI_DEVICE_ID_INTEL_SKL_GT2_SHALM,

src/soc/intel/common/block/systemagent/systemagent.c

@@ -310,6 +310,7 @@ static const unsigned short systemagent_ids[] = {
 	PCI_DEVICE_ID_INTEL_WHL_ID_Wx4,
 	PCI_DEVICE_ID_INTEL_KBL_ID_S,
 	PCI_DEVICE_ID_INTEL_SKL_ID_H_EM,
+	PCI_DEVICE_ID_INTEL_SKL_ID_DT,
 	PCI_DEVICE_ID_INTEL_KBL_ID_U,
 	PCI_DEVICE_ID_INTEL_KBL_ID_Y,
 	PCI_DEVICE_ID_INTEL_KBL_ID_H,

src/soc/intel/skylake/bootblock/report_platform.c

@@ -52,6 +52,7 @@ static struct {
 	{ PCI_DEVICE_ID_INTEL_SKL_ID_ULX, "Skylake-ULX" },
 	{ PCI_DEVICE_ID_INTEL_SKL_ID_H, "Skylake-H" },
 	{ PCI_DEVICE_ID_INTEL_SKL_ID_H_EM, "Skylake-H Embedded" },
+	{ PCI_DEVICE_ID_INTEL_SKL_ID_DT, "Skylake-DT" },
 	{ PCI_DEVICE_ID_INTEL_KBL_ID_U, "Kabylake-U" },
 	{ PCI_DEVICE_ID_INTEL_KBL_U_R, "Kabylake-R ULT"},
 	{ PCI_DEVICE_ID_INTEL_KBL_ID_Y, "Kabylake-Y" },
@@ -95,6 +96,7 @@ static struct {
 	const char *name;
 } igd_table[] = {
 	{ PCI_DEVICE_ID_INTEL_SKL_GT1_SULTM, "Skylake ULT GT1"},
+	{ PCI_DEVICE_ID_INTEL_SKL_GT2_DT2P1, "Skylake DT GT2" },
 	{ PCI_DEVICE_ID_INTEL_SKL_GT2_SULXM, "Skylake ULX GT2" },
 	{ PCI_DEVICE_ID_INTEL_SKL_GT2_SULTM, "Skylake ULT GT2" },
 	{ PCI_DEVICE_ID_INTEL_SKL_GT2_SHALM, "Skylake HALO GT2" },