drm/radeon: add support for RV790.

This adds the PCI IDs for the rv790 which are equiv to the rv770.

Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/radeon/r600_cp.c b/drivers/gpu/drm/radeon/r600_cp.c
index aa4eee4..146f357 100644
--- a/drivers/gpu/drm/radeon/r600_cp.c
+++ b/drivers/gpu/drm/radeon/r600_cp.c
@@ -478,13 +478,13 @@
 
 	if (((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RV770)) {
 		RADEON_WRITE(R600_CP_PFP_UCODE_ADDR, 0);
-		DRM_INFO("Loading RV770 PFP Microcode\n");
+		DRM_INFO("Loading RV770/RV790 PFP Microcode\n");
 		for (i = 0; i < R700_PFP_UCODE_SIZE; i++)
 			RADEON_WRITE(R600_CP_PFP_UCODE_DATA, RV770_pfp_microcode[i]);
 		RADEON_WRITE(R600_CP_PFP_UCODE_ADDR, 0);
 
 		RADEON_WRITE(R600_CP_ME_RAM_WADDR, 0);
-		DRM_INFO("Loading RV770 CP Microcode\n");
+		DRM_INFO("Loading RV770/RV790 CP Microcode\n");
 		for (i = 0; i < R700_PM4_UCODE_SIZE; i++)
 			RADEON_WRITE(R600_CP_ME_RAM_DATA, RV770_cp_microcode[i]);
 		RADEON_WRITE(R600_CP_ME_RAM_WADDR, 0);
diff --git a/include/drm/drm_pciids.h b/include/drm/drm_pciids.h
index c7a1a8d..f8634ab 100644
--- a/include/drm/drm_pciids.h
+++ b/include/drm/drm_pciids.h
@@ -273,6 +273,8 @@
 	{0x1002, 0x9456, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_RV770|RADEON_NEW_MEMMAP}, \
 	{0x1002, 0x945A, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_RV770|RADEON_IS_MOBILITY|RADEON_NEW_MEMMAP}, \
 	{0x1002, 0x945B, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_RV770|RADEON_IS_MOBILITY|RADEON_NEW_MEMMAP}, \
+	{0x1002, 0x9460, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_RV770|RADEON_IS_MOBILITY|RADEON_NEW_MEMMAP}, \
+	{0x1002, 0x9462, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_RV770|RADEON_IS_MOBILITY|RADEON_NEW_MEMMAP}, \
 	{0x1002, 0x946A, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_RV770|RADEON_IS_MOBILITY|RADEON_NEW_MEMMAP}, \
 	{0x1002, 0x946B, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_RV770|RADEON_IS_MOBILITY|RADEON_NEW_MEMMAP}, \
 	{0x1002, 0x947A, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_RV770|RADEON_IS_MOBILITY|RADEON_NEW_MEMMAP}, \