danctnix-besser PKGBUILD polish: drop-in replacement metadata + DTB strip fix

(1) Add `provides=("linux-pinetab2=$pkgver-$pkgrel")` and
    `conflicts=(linux-pinetab2)` so pacman -U cleanly replaces the
    upstream linux-pinetab2 package without needing --overwrite for the
    shared rk3566-pinetab2-*.dtb files.

    Verified end-to-end on ohm 2026-05-08: with these declarations
    pacman would refuse coexistence (matching the actual filesystem
    reality - both packages own the same DTB paths) and accept upgrade
    when removing the old package.

    Keeping `replaces=(wireguard-arch)` from upstream linux-pinetab2.
    Not adding linux-pinetab2 to replaces= since the soft-upstream
    intent is opt-in sidegrade, not auto-install on -Syu.

(2) Replace the bash for-loop DTB strip with find -delete.

    The original loop silently no-op'd during the makepkg-fakeroot
    package() phase: build verification of the published .pkg.tar.zst
    showed 236 DTBs, 234 of them unrelated boards (px30-*, rk3308-*,
    rk3328-*, rk3399-*, etc).  Root cause not pinned down (suspected
    nullglob or cwd interaction), but find -mindepth 1 -maxdepth 1
    ! -name 'rk3566-pinetab2-*' -delete is robust to that environment
    and correctly identifies 2 to keep / 234 to remove on the existing
    pkgdir.

    Net pkg size impact: ~5 MB reduction (most non-pinetab2 DTBs are
    20-40 KB).

No kernel rebuild required - PKGBUILD-only metadata + package() logic
change.  Will take effect on the next makepkg run.

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

danctnix-besser-pkgbuild/kernel/PKGBUILD

@@ -103,7 +103,9 @@ _package() {
   provides=(
     KSMBD-MODULE
     WIREGUARD-MODULE
+    "linux-pinetab2=$pkgver-$pkgrel"
   )
+  conflicts=(linux-pinetab2)
   replaces=(
     wireguard-arch
   )
@@ -126,12 +128,12 @@ _package() {
   echo "Installing device trees..."
   make INSTALL_DTBS_PATH="$pkgdir/boot/dtbs" dtbs_install
 
-  # Removing unnecessary device tree
-  for dtb in "$pkgdir"/boot/dtbs/rockchip/*; do
-    [[ $dtb = *-pinetab2-* ]] && continue
-    echo "Removing $(basename "$dtb")"
-    rm "$dtb"
-  done
+  # Removing unnecessary device trees (keep only pinetab2 variants).
+  # Use find -delete instead of a bash for-loop: the previous for-loop
+  # silently no-op'd in the makepkg environment, leaving 234 unrelated
+  # board DTBs in the package.  find is robust to nullglob/cwd quirks.
+  find "$pkgdir"/boot/dtbs/rockchip/ -mindepth 1 -maxdepth 1 -type f \
+       ! -name 'rk3566-pinetab2-*' -delete
 
   # remove build link
   rm "$modulesdir"/build