feat(packaging): add voxl2 Debian package build

Add make_package.sh and supporting files to build a .deb package
for the voxl2 target, bundling both the ARM64 apps processor binary
and Hexagon SLPI DSP library. The package version is derived from
the git tag and short commit hash. CI is updated to build and upload
the .deb alongside existing .px4 artifacts.

Tools/packaging/voxl2/pkg/control/control

@@ -0,0 +1,13 @@
+Package: voxl-px4
+Version: 0.0.0
+Section: devel
+Priority: optional
+Architecture: arm64
+Depends: libfc-sensor (>=1.0.10),
+ voxl-px4-params (>=0.3.10),
+ voxl3-system-image(>=0.0.2) | voxl2-system-image(>=1.5.4) | rb5-system-image(>=1.6.2),
+ modalai-slpi(>=1.1.16) | modalai-adsp(>=1.0.2)
+Replaces: px4-rb5-flight
+Conflicts: px4-rb5-flight
+Maintainer: Eric Katzfey <eric.katzfey@modalai.com>
+Description: ModalAI PX4 flight controller for VOXL2

Tools/packaging/voxl2/pkg/control/postinst

@@ -0,0 +1,91 @@
+#!/bin/bash
+################################################################################
+# Post-install script for voxl-px4
+#
+# Creates px4 module symlinks, sets up directories, and handles DSP signatures.
+################################################################################
+
+set -e
+
+################################################################################
+# Create px4 module symlinks from px4-alias.sh
+################################################################################
+cd /usr/bin
+
+if [ -f px4-alias.sh ]; then
+	# Auto-generate symlinks from the alias file produced by the build.
+	# Each alias line looks like: alias <name>='px4-<module> ...'
+	# We extract the px4-<module> part and create a symlink to the px4 binary.
+	grep "^alias " px4-alias.sh | grep -v "^alias set=" | \
+		sed -n "s/^alias [^=]*='\\(px4-[^ ']*\\).*/\\1/p" | \
+		sort -u | while read -r MODULE; do
+			ln -f -s px4 "$MODULE"
+		done
+	echo "Created px4 module symlinks"
+else
+	echo "Warning: px4-alias.sh not found, skipping symlink creation"
+fi
+
+################################################################################
+# Platform detection
+################################################################################
+PLATFORM="M0197"
+if [ -x /usr/bin/voxl-platform ]; then
+	PLATFORM=$(/usr/bin/voxl-platform 2>/dev/null || echo "M0197")
+fi
+
+if [ "$PLATFORM" = "M0052" ]; then
+	echo "Error: M0052 is no longer supported"
+	exit 1
+fi
+
+echo "Platform: $PLATFORM"
+
+################################################################################
+# Create runtime directories
+################################################################################
+mkdir -p /data/px4/param
+mkdir -p /data/px4/slpi
+
+if [ "$PLATFORM" = "M0197" ]; then
+	chown fastrpc:fastrpc /data/px4/slpi
+else
+	chown system:system /data/px4/slpi
+fi
+
+################################################################################
+# DSP test signature
+################################################################################
+SIG_SCRIPT_DIR=/share/modalai/qrb5165-slpi-test-sig
+if [ "$PLATFORM" = "M0197" ]; then
+	SIG_SCRIPT_DIR=/share/modalai/qcs6490-slpi-test-sig
+fi
+
+if /bin/ls /usr/lib/rfsa/adsp/testsig-*.so &>/dev/null; then
+	echo "Found DSP signature file"
+else
+	echo "DSP signature file not found"
+	if [ -f "$SIG_SCRIPT_DIR/generate-test-sig.sh" ]; then
+		echo "Generating DSP signature..."
+		"$SIG_SCRIPT_DIR/generate-test-sig.sh"
+	else
+		echo "Warning: DSP signature generation script not found at $SIG_SCRIPT_DIR"
+	fi
+fi
+
+################################################################################
+# Cleanup and reload
+################################################################################
+
+# Remove legacy config file
+rm -f /etc/modalai/voxl-px4.config
+
+sync
+
+# Reload systemd if available
+set +e
+if [ -f /bin/systemctl ]; then
+	systemctl daemon-reload
+fi
+
+exit 0

Tools/packaging/voxl2/pkg/services/voxl-px4.service

@@ -0,0 +1,13 @@
+[Unit]
+Description=px4
+After=sscrpcd.service
+Requires=sscrpcd.service
+
+[Service]
+ExecStartPre=/bin/sleep 2
+ExecStart=/usr/bin/voxl-px4
+ExecStopPost=/usr/bin/voxl-reset-slpi
+Restart=on-failure
+
+[Install]
+WantedBy=multi-user.target