scripts/gen-dependencies.sh: use the cross readelf (#12940)

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

SVN-Revision: 38259

scripts/gen-dependencies.sh

@@ -20,7 +20,7 @@ XARGS="${XARGS:-xargs -r}"
 
 find $TARGETS -type f -a -exec file {} \; | \
   sed -n -e 's/^\(.*\):.*ELF.*\(executable\|shared object\).*,.* stripped/\1/p' | \
-  $XARGS -n1 readelf -d | \
+  $XARGS -n1 $READELF -d | \
   awk '$2 ~ /NEEDED/ && $NF !~ /interpreter/ && $NF ~ /^\[?lib.*\.so/ { gsub(/[\[\]]/, "", $NF); print $NF }' | \
   sort -u