check-pie.sh: use $TERMUX_PREFIX

scripts/check-pie.sh

@@ -1,7 +1,10 @@
 #!/bin/sh
 # check-pie.sh - script to detect non-PIE binaries (which does not work on Android)
 
-cd /data/data/com.termux/files/usr/bin/
+. $(dirname "$(realpath "$0")")/properties.sh
+
+cd ${TERMUX_PREFIX}/bin
+
 for file in *; do
 	if readelf -h $file 2>/dev/null | grep -q 'Type:[[:space:]]*EXEC'; then
 		echo $file