drm/amd: Add name to modes from amdgpu_connector_add_common_modes()

[Why]
When DC adds common modes it adds modes with a string to match what
they are. Non-DC doesn't. This can be inconsistent when turning on/off
DC support.

[How]
Add a name member to common_modes[] and copy it into the drm display
mode.

Cc: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Timur Kristóf <timur.kristof@gmail.com>
Link: https://lore.kernel.org/r/20250924161624.1975819-6-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

@@ -399,21 +399,22 @@ static void amdgpu_connector_add_common_modes(struct drm_encoder *encoder,
 	struct drm_display_mode *native_mode = &amdgpu_encoder->native_mode;
 	int i;
 	int n;
-	static const struct mode_size {
+	struct mode_size {
+		char name[DRM_DISPLAY_MODE_LEN];
 		int w;
 		int h;
 	} common_modes[] = {
-		{ 640,  480},
-		{ 800,  600},
-		{1024,  768},
-		{1280,  720},
-		{1280,  800},
-		{1280, 1024},
-		{1440,  900},
-		{1680, 1050},
-		{1600, 1200},
-		{1920, 1080},
-		{1920, 1200}
+		{  "640x480",  640,  480},
+		{  "800x600",  800,  600},
+		{ "1024x768", 1024,  768},
+		{ "1280x720", 1280,  720},
+		{ "1280x800", 1280,  800},
+		{"1280x1024", 1280, 1024},
+		{ "1440x900", 1440,  900},
+		{"1680x1050", 1680, 1050},
+		{"1600x1200", 1600, 1200},
+		{"1920x1080", 1920, 1080},
+		{"1920x1200", 1920, 1200}
 	};
 
 	n = ARRAY_SIZE(common_modes);
@@ -435,6 +436,7 @@ static void amdgpu_connector_add_common_modes(struct drm_encoder *encoder,
 		mode = drm_cvt_mode(dev, common_modes[i].w, common_modes[i].h, 60, false, false, false);
 		if (!mode)
 			return;
+		strscpy(mode->name, common_modes[i].name, DRM_DISPLAY_MODE_LEN);
 
 		drm_mode_probed_add(connector, mode);
 	}