drm/amd: Drop some common modes from amdgpu_connector_add_common_modes()

[Why]
DC and non-DC codepaths have different sets of common modes that are
added for eDP and LVDS cases. This can cause different behaviors for
turning on DC on hardware that can support both.

[How]
Drop extra modes from amdgpu_connector_add_common_modes() not present
in amdgpu_dm_connector_add_common_modes().

Cc: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://lore.kernel.org/r/20250924161624.1975819-5-mario.limonciello@amd.com
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Author: superm1

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

@@ -404,18 +404,12 @@ static void amdgpu_connector_add_common_modes(struct drm_encoder *encoder,
 		int h;
 	} common_modes[] = {
 		{ 640,  480},
-		{ 720,  480},
 		{ 800,  600},
-		{ 848,  480},
 		{1024,  768},
-		{1152,  768},
 		{1280,  720},
 		{1280,  800},
-		{1280,  854},
-		{1280,  960},
 		{1280, 1024},
 		{1440,  900},
-		{1400, 1050},
 		{1680, 1050},
 		{1600, 1200},
 		{1920, 1080},