* cdl/usbs_serial.cdl: Fix typo introduced by Andrew Lunn in the previous patch when CYGBLD_IO_USB_SLAVE_SERIAL_BUSPOWERED as renamed CYGOPT_IO_USB_SLAVE_SERIAL_BUSPOWERED.

/* this is a simple hello world program */
#include <stdio.h>

int main(void)
{
  printf("Hello, eCos world!\n");
  return 0;
}