Merge "btlinux: wait forever for a BT device"

#define MGMT_EV_INDEX_ADDED 0x0004

#define MGMT_EV_COMMAND_COMP 0x0001

#define MGMT_EV_SIZE_MAX 1024

#define MGMT_EV_POLL_TIMEOUT 3000 /* 3000ms */

#define WRITE_NO_INTR(fn) \

  do {                  \

  } while ((fn) == -1 && errno == EINTR)

  /* validate mentioned hci interface is present and registered with sock system */

  while (1) {

    int n;

    WRITE_NO_INTR(n = poll(fds, 1, MGMT_EV_POLL_TIMEOUT));

    WRITE_NO_INTR(n = poll(fds, 1, -1));

    if (n == -1) {

      ALOGE( "Poll error: %s", strerror(errno));

      ret = -1;