Multiple stm32l4 timer fixes

- too many parentheses when calculating max chan count (???)
- channel 4 does not have a complementary output

Merged in david_s5/nuttx-5/david_s5/kinetish-edited-online-with-bitbucket-1476115086140 (pull request #144)

kinetis.h edited online with Bitbucket

Merged in david_s5/nuttx-4/david_s5/kinetish-edited-online-with-bitbucket-1476114936502 (pull request #143)

kinetis.h edited online with Bitbucket

include/nuttx/fs/nxffs.h: Needs forward reference to struct mtd_dev_s and needs to include stdbool.h

dma2d: fix an error in up_dma2dcreatelayer where an invalid pointer was returned when a certain underlying function failed.

dma2d: fix an error in up_dma2dcreatelayer where an invalid pointer was returned when a certain underlying function failed.

More fixed related to name changes from CONFIG_WL_MFRC522 to CONFIG_CL_MFRC522.  Also depends on CONFIG_CONTACTLESS. not CONFIG_WIRELESS.

configs/stm32l476-mdk/nsh: Remove CONFIG_CXX_INITIALIZE.  up_cxxinitialize is not provided in apps/platfor for this board.

configs/olimex-stm32-e407: Add some networking configurations

Master l4 usbfix

Add support for qencoders on various nucleo boards

Add support for quadrature encoders on STM32L4, including gpio definitions for both directions of timer channels.

sched/pthread and task:  When a pthread is started, there is a small bit of logic that will run on the thread of execution of the new pthread.  In the case where the new pthread has a lower priority than the parent thread, then this could cause both the parent thread and the new pthread to be blocked at the priority of the lower priority pthread (assuming that CONFIG_PRIORITY_INHERITANCE is not selected).

This change temporarily boosts the priority of the new pthread to at least the priority of the new pthread to at least the priority of the parent thread.  When that bit of logic has executed on the thread of execution of the new pthread, it will then drop to the correct priority (if necessary) before calling into the new pthread's entry point.