Merge upstream/main into noether/migrate-pinetab2-pkg-and-patches

Resolves the conflict-window between the PR's "switch bes2600 to
cumulative-c5x interim" intent and main's incremental per-patch
evolution.

Resolution per discussion:
- fleet/ohm.yaml: keep PR's cumulative-c5x layout (replaces per-patch
  list) but rename arch/arm64 include to main's canonical
  'scs-arm-neon-build-fix/' (branch's renamed dir dropped).
- patches/driver/bes2600/queue-pending-record-lock-bh-danctnix/
  0001-*.patch: take main's (= identical content + the git-format-patch
  trailer that the branch's earlier add omitted).
- patches/driver/bes2600/scan-filter-5ghz-danctnix/: drop branch's
  older '0001-...-allow-single-channel.patch' variant; keep main's
  newer '0001-...-filter-at-driver-boundary.patch' to avoid 0001-*
  collisions in ka-promote's series-dir resolver.
- patches/arch/arm64/xor-neon-ffixed-x18-scs-build-fix-danctnix/:
  dropped (= duplicate of main's scs-arm-neon-build-fix/).
- All other main additions (rkvdec vp9 patches, scan-filter-5ghz/,
  fleet/ampere.yaml updates) auto-merged cleanly.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

fleet/ampere.yaml

@@ -53,12 +53,19 @@ includes:
   - board/coolpi-cm5-genbook/0005-arm64-dts-rockchip-rk3588-coolpi-cm5-genbook-Enable-USB-C-PD-charging-via-FUSB302.patch
   - board/coolpi-cm5-genbook/0008-arm64-dts-rockchip-rk3588-coolpi-cm5-genbook-Add-lid-switch-and-USB3-PHY-lane-config.patch
   - board/coolpi-cm5-genbook/0011-arm64-dts-rockchip-rk3588-coolpi-cm5-genbook-wire-internal-microphone.patch
+  # VP9 enablement for RK3588 rkvdec (issue #12, closed 2026-05-18).
+  # Cherry-picked from D.V.A.B. Sarma's add-rkvdec-vdpu381-vp9-v8 branch
+  # at github.com/dvab-sarma/android_kernel_rk_opi. Bit-exact HW==SW==libva
+  # verified at -ss 30 on bbb_60s_720p.vp9.webm via all three decode paths
+  # (kdirect / SW / libva); sha c8624d7c42db66525f53a02a515bc38d0a17ef39f692660cc7bebb1e2d2e1b48.
+  # Apply order is STRICT (0003 depends on the rkvdec-vp9-common refactor
+  # added in 0002, which depends on the helper rename in 0001).
+  # See patches/driver/media/README.md for provenance + removal criteria.
+  - driver/media/0001-rkvdec-vp9-rename-get_ref_buf-to-get_ref_buf_vp9.patch
+  - driver/media/0002-rkvdec-move-vp9-functions-to-common-file.patch
+  - driver/media/0003-rkvdec-add-vp9-support-for-vdpu381-variant.patch
 
 # Explicitly NOT included this round (tracked for later sprints):
-#   - VP9 enablement for RK3588 rkvdec (issue #6 ask 2). /dev/video0 only
-#     advertises S265 + S264 today; vainfo lists 9 profiles, target is
-#     10. Requires identifying the VDPU381/383 patch chain + possible
-#     DTS additions. RFC-stage work, scope unclear until research lands.
 #   - AV1 decoder integration (issue #6 ask 3). Kernel side is fine
 #     (/dev/video4 advertises AV1F). Backend libva-v4l2-request-fourier
 #     needs iter39 for a third fd. Backend work, not kernel.