in the case of CONFIG_SEM_PREALLOCHOLDERS=0

   The call to sem_restorebaseprio_task context switches in the
   sem_foreachholder(sem, sem_restoreholderprioB, stcb); call
   prior to releasing the holder. So the running task is left
   as a holder as is the started task. Leaving both slots filled
   Thus failing to perforem the boost/or restoration on the
   correct tcb.

   This PR fixes this by releasing the running task slot prior
   to reprioritization that can lead to the context switch.
   To faclitate this, the interface to sem_restorebaseprio
   needed to take the tcb from the holder prior to the
   holder being freed. In the failure case where sched_verifytcb
   fails it added the overhead of looking up the holder.

   There is also the adfitinal thunking on the foreach to
   get from holer to holder->tcb.

   An alternate approach could be to leve the interface the same
   and allocate a holder on the stack of sem_restoreholderprioB
   copy the sem's holder to it, free it as is done in this pr
   and and then pass that address sem_restoreholderprio as the
   holder. It could then get the holder's tcb but we would
   keep the same sem_findholder in sched_verifytcb.

lp_worker:Guard from pend_reprios overlow

Approved-by: Gregory Nutt

ARM: Fix off-by-one interrupt stack allocation in 8-byte aligned architectures

Approved-by: Gregory Nutt

semaphore:sem_boostholderprio prevent overrun of pend_reprios

Approved-by: Gregory Nutt

  The second case rtcb->sched_priority <= htcb->sched_priority
  did not check if there is sufficient space in the pend_reprios
  array.

Partial Fix priority inheritance  CONFIG_SEM_PREALLOCHOLDERS=0

Approved-by: Gregory Nutt

  sem_findholder would fail and code optimization coverd this up.

Move wireless IOCTLs from include/nuttx/net/ioctl to include/nuttx/wireless/wireless.h.  Add some linux compatible structures to use with the IOCTL commands.

If whence is SEEK_END, the file offset shall be set to the size of the file plus offset. Noted by eunb.song@samsung.com

Networking: Add registration support for integrated ieee80211 wireless drivers.  Rename CONFIG_IEEE802154 to CONFIG_WIRELESS_IEEE8021514 following the convention of including the location of the configuration variable as a part of its name.

Photon: add basic support for wlan chip

Approved-by: Gregory Nutt

STM32; OTG host implementations of stm32_in_transfer() must obey the polling interval for the case of isochronous and itnerrupt endpoints.

STM32 OTG HS:  A little research reveals that only the F2 RCC initialization set the OTGHSULPIEN bit and Photon is the only F2 board configuration that uses OTG .  Therefore, we can simplify the conditional logic of the last PR.  Negative logic was used (#ifndef BOARD_DISABLE_USBOTG_HSULPI) to prevent bad settings in other configurations.  But give these facts, the preferred positive logic now makes more sense (#ifdef BOARD_ENABLE_USBOTG_HSULPI).

STM32: Review of last STM32 F2 PR.  Progate changes to STM32 F4 and F7 OTGHS.  Rename some configs/photon/src files.  Naming can be either photon_ or stm32_ but must be consistent.

stm32f20xxx: add BOARD_DISABLE_USBOTG_HSULPI flag

Approved-by: Gregory Nutt

Merged in david_s5/nuttx-13/david_s5/as-discovered-by-dcabecinhas-this-fix-as-1489246417893 (pull request #264)

As discovered by dcabecinhas. This fix assume the 8 byte alignment options for size stack size or this will overwrite the first word after TOS

Approved-by: Gregory Nutt