radv/video: Add low latency encoding
What does this MR do and why?
Add command for low latency encoding in radv vulkan video encode when user asked for one of the low latency tuning modes. Fixes #11958 (closed)
radv/video: Add low latency encoding
When VkVideoEncodeUsageInfoKHR has a tuningMode of
VK_VIDEO_ENCODE_TUNING_MODE_LOW_LATENCY_KHR or
VK_VIDEO_ENCODE_TUNING_MODE_ULTRA_LOW_LATENCY_KHR, request low latency
mode for the encoder.