drm/amd/display: enable S/G for RAVEN chip

enables gpu_vm_support in dm and adds
AMDGPU_GEM_DOMAIN_GTT as supported domain

v2:
Move BO placement logic into amdgpu_display_supported_domains

v3:
Use amdgpu_bo_validate_uswc in amdgpu_display_supported_domains.

v4:
amdgpu_bo_validate_uswc moved to sepperate patch.
Signed-off-by: Shirish S <shirish.s@amd.com>
Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_display.c

@@ -507,7 +507,7 @@ uint32_t amdgpu_display_supported_domains(struct amdgpu_device *adev)
 	 * APUs. So force the BO placement to VRAM in case this architecture
 	 * will not allow USWC mappings.
 	 */
-	if (adev->asic_type >= CHIP_CARRIZO && adev->asic_type < CHIP_RAVEN &&
+	if (adev->asic_type >= CHIP_CARRIZO && adev->asic_type <= CHIP_RAVEN &&
 	    adev->flags & AMD_IS_APU && amdgpu_bo_support_uswc(0) &&
 	    amdgpu_device_asic_has_dc_support(adev->asic_type))
 		domain |= AMDGPU_GEM_DOMAIN_GTT;

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c

@@ -688,7 +688,7 @@ static int amdgpu_dm_init(struct amdgpu_device *adev)
 	 */
 	if (adev->flags & AMD_IS_APU &&
 	    adev->asic_type >= CHIP_CARRIZO &&
-	    adev->asic_type < CHIP_RAVEN)
+	    adev->asic_type <= CHIP_RAVEN)
 		init_data.flags.gpu_vm_support = true;
 
 	if (amdgpu_dc_feature_mask & DC_FBC_MASK)