boards: NuttX disable posix message queues

[dagar]

Posix message queues are kind of interesting, but there's no current usage in PX4, and I'm not aware of them ever being used.

Saves ~ 0.7 kB of flash and somewhere between 1.2-1.7 kB of memory depending on the number of threads in the system.

[dagar]

Unless there's any objection I'm going to merge this because we've hit the flash limit on px4_fmu-v2 again.

     VM SIZE    
 -------------- 
  [NEW]     +96    page_sizes.7124
   +33%     +52    [section .bss]
  [NEW]     +32    serial_dma_call.9319
  [NEW]     +22    format.7609
  [NEW]     +20    baudrates.10564
  [NEW]     +20    baudrates_to_try.9397
  [NEW]     +16    __FUNCTION__.8734
  [NEW]     +13    __FUNCTION__.7222
  [NEW]     +13    __FUNCTION__.8718
  [NEW]     +13    __FUNCTION__.8744
  [NEW]     +12    __FUNCTION__.8726
  [NEW]     +10    __FUNCTION__.8756
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  [ = ]       0    [Unmapped]
  [ = ]       0    [section .debug_abbrev]
  [ = ]       0    [section .debug_aranges]
  [ = ]       0    [section .debug_frame]
  [ = ]       0    [section .debug_info]
  [ = ]       0    [section .debug_line]
  [ = ]       0    [section .debug_loc]
  [ = ]       0    [section .debug_ranges]
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  [ = ]       0    [section .symtab]
  [ = ]       0    group_delwaiter
  [ = ]       0    param_import_internal(int, bool)
  [ = ]       0    pthread_release
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  [DEL]     -22    format.7745
  [DEL]     -28    nxmq_free_msgq
  -0.0%     -32    [section .text]
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  [DEL]     -34    nxmq_recover
  [DEL]     -40    nxmq_close_group
 -10.1%     -44    nx_start
  [DEL]     -52    nxmq_alloc_desblock
  [DEL]     -52    nxmq_desclose_group
  [DEL]     -64    nxmq_wait_irq
  [DEL]     -68    mq_inode_release
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  [DEL]     -96    page_sizes.7260
  [DEL]    -108    nxmq_initialize
  -0.1%    -728    TOTAL

[LorenzMeier]

What about the failure you reported?

[dagar]

What about the failure you reported?

Where? I'm not sure what you're referring to.