refactor: move linux kernel headers to separate folders per source

Signed-off-by: Mateusz Jablonski <mateusz.jablonski@intel.com>

third_party/uapi/README.md

@@ -9,16 +9,7 @@ SPDX-License-Identifier: MIT
 
 Source locations of Linux kernel interface headers:
 
-1. https://repositories.intel.com/graphics/kernel-api/index.html
-    - dg1/i915_drm.h
-2. https://git.kernel.org/stable/h/v6.9.9
-    - drm/drm.h
-    - drm/drm_mode.h
-    - drm/drm_fourcc.h
-    - i915/i915.h
-    - xe/xe_drm.h
-3. https://github.com/intel-gpu/drm-uapi-helper/releases/tag/v2.0-rc24
-    - i915/prelim/i915.h
-    - i915/prelim/i915_prelim.h
-    - iaf/iaf_netlink.h
+1. dg1: https://repositories.intel.com/graphics/kernel-api/index.html
+2. drm-uapi-helper: https://github.com/intel-gpu/drm-uapi-helper
+3. upstream: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
      

third_party/uapi/dg1/.version

@@ -0,0 +1 @@
+source: https://repositories.intel.com/graphics/kernel-api/index.html

third_party/uapi/drm-uapi-helper/.version

@@ -0,0 +1,2 @@
+git_revision: v2.0-rc24
+git_url: https://github.com/intel-gpu/drm-uapi-helper