ffmpeg-v4l2-request-fourier: route H.264 chroma v/h deblock through daedalus-fourier (0009)

Chroma siblings of 0005 (luma_v) and 0008 (luma_h).  Same
NEON-to-NEON pattern via the daedalus recipe layer:

  H264DSPContext.v_loop_filter_chroma →
    daedalus_recipe_dispatch_h264_deblock_chroma_v
  H264DSPContext.h_loop_filter_chroma →
    daedalus_recipe_dispatch_h264_deblock_chroma_h

Both kernels landed in daedalus-fourier PR #10.  Recipe table routes
AUTO to CPU NEON (no chroma QPU shaders yet), so this is plumbing-
only and stays bit-exact against the in-tree NEON.

Intra chroma (bS=4) loop filters remain on in-tree NEON;
daedalus_h264_deblock_meta covers the non-intra (bS<4) path.

Verified the patch applies cleanly on top of 0001-0008 against the
pinned upstream commit b57fbbe5 on hertz.  Wires the new patch into
both arch/PKGBUILD and debian/build-deb.sh.

arch/ffmpeg-v4l2-request-fourier/PKGBUILD

@@ -95,8 +95,9 @@ source=("git+https://github.com/Kwiboo/FFmpeg.git#commit=${_commit}"
         '0005-h264-deblock-luma-v-daedalus-fourier.patch'
         '0006-h264-restore-low-delay.patch'
         '0007-h264-qpel-mc20-daedalus-fourier.patch'
-        '0008-h264-deblock-luma-h-daedalus-fourier.patch')
-sha256sums=('SKIP' 'SKIP' 'SKIP' 'SKIP' 'SKIP' 'SKIP' 'SKIP' 'SKIP' 'SKIP' 'SKIP')
+        '0008-h264-deblock-luma-h-daedalus-fourier.patch'
+        '0009-h264-deblock-chroma-daedalus-fourier.patch')
+sha256sums=('SKIP' 'SKIP' 'SKIP' 'SKIP' 'SKIP' 'SKIP' 'SKIP' 'SKIP' 'SKIP' 'SKIP' 'SKIP')
 
 pkgver() {
   cd "${_srcname}"
@@ -115,6 +116,7 @@ prepare() {
   patch -Np1 -i "${srcdir}/0006-h264-restore-low-delay.patch"
   patch -Np1 -i "${srcdir}/0007-h264-qpel-mc20-daedalus-fourier.patch"
   patch -Np1 -i "${srcdir}/0008-h264-deblock-luma-h-daedalus-fourier.patch"
+  patch -Np1 -i "${srcdir}/0009-h264-deblock-chroma-daedalus-fourier.patch"
 }
 
 build() {