stm32_dac.c: support external triggering for DMA transfer

Approved-by: Gregory Nutt <gnutt@nuttx.org>

Master

* stm32f0/Kconfig: remove references to HRTIM

* STM32F33: missing SYSCFG CFGR3 definitions

* stm32_hrtim.h: remove redundant definitions

* stm32_hrtim.c: fix DAC triggers configuration

* stm32_hritm.c: warning message when default value selected

* stm32_hrtim.c: missing master timer logic

* stm32_hrtim.c: add more assertions

* stm32_dac.c: fix conditional

* stm32_dac.c: conditional logic for timer triggering

* stm32_dac.c: fix TSEL configuration when HRTIM

* stm32_dac.c: unnecessary condition

* stm32_dac.c: DMA request remapping

* stm32_dac.c: fix commpilation errors

* stm32_dac.c: add DMA buffers initialization logic

* stm32_hrtim.c: enable DAC triggering

* analog/comp.c: fix compilation errors when poll disabled

* stm32_hrtim.c: remove doubled assertions

Approved-by: Gregory Nutt <gnutt@nuttx.org>

eMMC/SD and USB support for LC823450

Approved-by: Gregory Nutt <gnutt@nuttx.org>

Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>

Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>

Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>

Simulator: Adds necessary functionality to build Simulator under ARM Linux. Tested only on Raspberry3. Currently setjmp/longjmp do not save/restore floating point registers.  Patch provided by Bitbucket user nbkolchin.

6LoWPAN:  The original, Contiki-based design used only a single buffer for reassemblying larger packets.  This could be a problem issue for hub configurations which really need the capability concurrently reassemble multiple incoming streams concurrently.  These was also a design issue in that the reassembly buffer could be corrupted by outgoing packets.  The design was extended to support multiple reassembly buffers, each associated with the reassembly tag and source address.  This assures that there can be be no corruption of the reassembly once it has started.

STM32L4 DAC: report transfer as completed in DMA callback.  Without this even O_NONBLOCK writes block the calling task if DAC was using DMA.

drivers/audio:  Fix naming of configurations to be compliant for vs1053 audio driver.  One file was not saved before last commit.

drivers/sensors:  Fix more naming of configurations to be compliant for two more drivers.  Still a few more to go.

drivers/sensors:  Fix more naming of configurations to be compliant for two more drivers.  Still a few more to go.

drivrs/sensors:  Make a few other configuration settings consistent with the (undocumented) standard.

drivrs/sensors/hts221:  Fix inconsistent configuration variable naming; Try to bring closer to an as-of-yet undocumented naming convention.

drivers/wireless/spirit: Fixes a pre-processor directive

Approved-by: Gregory Nutt <gnutt@nuttx.org>