S99-flash-from-kernel.sh: add exec permission

Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

usb-loader/S99flash-from-kernel.sh

 #!/bin/bash
 
 # Write kernel and filesystem to NAND memory
-ls /
-cat /etc/init.d/rcS
 echo "FLASHING: flashing kernel to /dev/mtd0 ..."
 nandwrite -m -p -a /dev/mtd0 /flashing/zImage
 echo "FLASHING: flashing file system to /dev/mtd1 ..."