update encode readme file.

Update decode features and output format(s)

Add BMG VP features for open source

Add LNL vp features

Update decode features and output format(s)

Enable Lunar Lake decoding and video processing support, encoding will
be later.
Add MTL/ARL kernel information.

Update readme for platform

Clarify non-free/free kernel build options and update some wordings.

Add ARL-S in README support list and update feature doc.

From MTL, VAEntrypointEncSliceLP and VAEntrypointEncSlice are consolidated to the unified API VAEntrypointEncSlice.

  - Improve grammar in HuC firmware section.
  - Standardize "Kernel/Kernal" as "kernel".
  - Change "Huc" capitalization to "HuC".

Enable HEVC 8/10 bit 422 capability in readme.md

Correct the enable_guc setting for all platforms.

Correct HEVC 8/10bit 422 capability in readme

Add MTL in README support list and update feature doc.

This reverts commit a9513a5d.

By this change, open source driver do not need multi build for
prelim/upstream i915 anymore.

Update SG1/DG1 support kernel

Add 3DLUT feature in readme.md for open source.

1 this patch is mainly for RPLP upstream
2 updated latest ADLP device id support list

Signed-off-by: Li, Xiaogang <xiaogang.li@intel.com>

added RPL-S in the supported platform list。

ADL-P require parallel submission support, so it is required >=5.17

Add encode/decode/vp features support for DG2

Add Compatibility with GmmLib link to readme page
Add DG1/SG1 kernel link

Update readme to include new platforms

Added GLK in readme
Optimize per platform feature and format table

To simplify the building step to combine prerequiresite and dependency together.

Fixes: #1233

Correct the AV1 film grain information in readme

ADLP open source
GMM has open upstreamed: commit aae48c9ca

ADL_S open source patch
gmm open source patch:2072b0d1e8ba2cba2f94bc2c1fda89d6e457a50b

Version bump up and readme minor change

Update readme and mediafeature.md files.

- TGL starting from 5.9
- EHL/JSL from 5.8
- RKL still in drm-tip
- Replace Full Feature/Free Kernel with Full-Feature/Free-Kerenl for better reading.

Modify VP8 decoding platform
Update documents for media support

[Media Common] Update SG1 information in readme
Change-Id: Ibd81d39283f85d55db0ef184f6b76a5d043b0dbd