PX4-NuttX/nuttx branch test: px4-master_auto_rebase

NuttX:
 - https://github.com/PX4-NuttX/nuttx/tree/px4-master_auto_rebase
 - PX4/NuttX@5e82d9c

Changes from PX4-NuttX/nuttx (PX4/NuttX@8957a02) in current PX4/master (c415477)
PX4/NuttX@8957a02...5e82d9c

5e82d9c (HEAD, origin/px4-master_auto_rebase) [PX4: WIP] Fix transmission status handling in the serial interrupt
228396c [PX4: REJECTED] cstdint fix
f45ebc1 [PX4: REJECTED] add math.h
122e647 [PX4: WIP] Jenkinsfile
9574b0f (origin/master) configs/nucleo-l432kc: Fix stm32_userleds and some comments.  After change LD2 to LD3 in board.h stm32_userleds.c was broken.
2fd4925 Update some comments
1006906 include/nuttx/i2c/i2c_master.h:  Rename I2C_M_NORESTART to I2C_M_NOSTART since it may be used in other contexts than a repeated start.  Add comments to clarilfy setup for repeated start.
ee28cd9 include/nuttx/i2c/i2c_master.h:  Add a definition to distinguish a new START of messages from a repeated start.  No lower-half I2C drivers actually implement this new flag bit, however.  drivers/i2c/i2c_writeread.c:  Use new repeated START definition where appopriated.  Other:  Some cosmetic changes, updates to README files, etc.
ac5b2ea Merged in masayuki2009/nuttx.nuttx/fix_tcp_statistics (pull request #703)
09ccd43 arch/arm/include/armv7-m, arch/arm/include/armv7-m, arch/arm/include/stm32f7:  Add a configuration to enable workaround for r0p1 Errata 837070: Increasing priority usingwrite to BASEPRI does not take effect immediately.

Apps:
 - https://github.com/PX4-NuttX/apps/tree/px4-master_auto_rebase
 - PX4/NuttX-apps@52d762a

Changes from PX4-NuttX/apps (PX4/NuttX-apps@36806ba) in current PX4/master (c415477)
PX4/NuttX-apps@36806ba...52d762a

52d762a (HEAD -> px4-master_auto_rebase, origin/px4-master_auto_rebase) [REJECTED] add-var-expansion-in-nsh-parse.patch
a1e5bf6 (origin/master) apps/system/i2c:  Adapt to rename I2C_M_RESTART->i2C_M_START.  I2C_M_NOSTOP should be in flags of first message in every write-read and write-write mesage sequence.
d9cb917 Merged in masayuki2009/nuttx.apps/refactor_nxplayer (pull request #149)
822291b apps/fsutils/mkfatfs:  Add some comments.  Clean up some coding style issues.
d365707 Add definitions for the FAT boot record (FBR).
6916fa0 fs/fat:  Clean up some name BS_ and MBR_ refer to the same record and should use the same naming (MBR_).
f0b4f14 Eliminate some new warnings reported in build testing.
3cc79be examples/lvgldemo/ and graphics/littlevgl/:  pdate LVGL to version 5.1.1
1030ea7 Merged in masayuki2009/nuttx.apps/fix_mksymtab (pull request #147)
cb9e951 apps/Make.defs:  Improve the symtab target.  tools/mksymtab.sh:  Fix a typo.