Add basic checks to libmali-sunxi package

extras-buildpkgs/libmali-sunxi-r3p0/debian/control

@@ -10,6 +10,7 @@ Homepage: https://github.com/linux-sunxi/sunxi-mali/
 
 Package: libmali-sunxi-r3p0
 Architecture: any
+Pre-Depends: armbian-bsp
 Depends: ${shlibs:Depends}, ${misc:Depends}
 Replaces: libegl1-mesa, libgles1-mesa, libgles2-mesa
 Provides: sunxi-mali

extras-buildpkgs/libmali-sunxi-r3p0/debian/libmali-sunxi-r3p0.preinst

@@ -0,0 +1,23 @@
+#!/bin/sh
+
+BRANCH=""
+LINUXFAMILY=""
+
+[ -f "/etc/armbian-release" ] && . /etc/armbian-release
+
+case "$1" in
+	install)
+		if [ -z "$BRANCH" ] || [ "$BRANCH" != "default" ]; then
+			echo "Mali binary driver can be used only with legacy kernel" 1>&2
+			exit 1
+		fi
+		if [ -z "$LINUXFAMILY" ] || ! ( [ "$LINUXFAMILY" = "sun4i" ] || [ "$LINUXFAMILY" = "sun7i" ] || [ "$LINUXFAMILY" = "sun8i" ] ); then
+			echo "Mali binary driver can be used only on sunxi hardware" 1>&2
+			exit 1
+		fi
+	;;
+esac
+
+#DEBHELPER#
+
+exit 0