drivers/mtd/mtd_progmem.c: Add an upper-half driver that can be used with any FLASH library that provides the itnerfaces defined in include/nuttx/progmem.h

CAN: Don't disable TX interrupts if the S/W TX FIFO is empty but the hardware supports a H/W TX FIFO

MTD Smart: Remove checks for 64KB erase block size.  erasesize was changed to 32-bits in struct mtd_geometry_s

SmartFS: Backout last change.  It alters the behavior when it should not.  Obviously there is something that I do not understand

s25fl1: When unprotecting, handle case where protection bits are inverted.  Add option to s25flinitilize() to unprotected on power up

SmartFS: Fix a compile error when FS debug enabled.  Plus some changes needed by NuttX coding standard

RAMLOG: Fix forgotten FARs

ADC: Fix forgotten FARs

CAN: Add a new CAN upper-half interface, can_txready(), that can be used to break deadlock conditions in certain CAN hardware that supports queuing of TX messages

PWM: Add support for multiple output channels per timer