Enable Framebuffer for testing Output Overlay

configname: CONFIG_VIDEO_VIVID_OSD

Linux Kernel Configuration
└─>Device Drivers
└─>Multimedia support
└─>Media drivers
└─>V4L test drivers
└─>Enable Framebuffer for testing Output Overlay
In linux kernel since version 6.6.86 (release Date: 2025-04-07)  
When selected the vivid module will emulate a Framebuffer for
testing Output Overlay.