drm/amd/display: Replace block with strncpy() in fill_audio_info()

Replace inlined strncpy with library call.
Signed-off-by: Tom St Denis <tom.stdenis@amd.com>
Acked-by: Andrey Grodzovsky  <andey.grodzovsky@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -2238,11 +2238,9 @@ static void fill_audio_info(struct audio_info *audio_info,
 
 	cea_revision = drm_connector->display_info.cea_rev;
 
-	while (i < AUDIO_INFO_DISPLAY_NAME_SIZE_IN_CHARS &&
-		edid_caps->display_name[i]) {
-		audio_info->display_name[i] = edid_caps->display_name[i];
-		i++;
-	}
+	strncpy(audio_info->display_name,
+		edid_caps->display_name,
+		AUDIO_INFO_DISPLAY_NAME_SIZE_IN_CHARS - 1);
 
 	if (cea_revision >= 3) {
 		audio_info->mode_count = edid_caps->audio_mode_count;