media-scan: permit ISO discovery under subdirectories (not just rootfs) through 'find /media -name *.iso -type f'

Signed-off-by: Thierry Laurion <insurgo@riseup.net>

Author: tlaurion

initrd/bin/media-scan

@@ -79,8 +79,8 @@ get_menu_option() {
 	fi
 }
 
-# create ISO menu options
-ls -1r /media/*.iso 2>/dev/null > /tmp/iso_menu.txt || true
+# create ISO menu options - search recursively for ISO files
+find /media -name "*.iso" -type f 2>/dev/null | sort -r > /tmp/iso_menu.txt || true
 if [ `cat /tmp/iso_menu.txt | wc -l` -gt 0 ]; then
 	option_confirm=""
 	while [ -z "$option" -a "$option_index" != "s" ]