* Simplify EINTR/ECANCEL error handling
1. Add semaphore uninterruptible wait function
2 .Replace semaphore wait loop with a single uninterruptible wait
3. Replace all sem_xxx to nxsem_xxx
* Unify the void cast usage
1. Remove void cast for function because many place ignore the returned value witout cast
2. Replace void cast for variable with UNUSED macro
Add support for 4-byte addressing on >128Mb Macronix flash parts
* Save CONFIG_ARCH_BOARD_CUSTOM when running 'make savedefconfig'
* Only use PCLKSEL0 for ADC on LPC176x family.
* Made grep search expression more specific.
* Added missing '=' to second grep
* Revert "Only use PCLKSEL0 for ADC on LPC176x family."
This reverts commit 835b5e9d6fcbea02cb0203c063b0e121fa57ba9e.
* Revert "Added missing '=' to second grep"
This reverts commit 38b51f0c6d9612de755c102a53846ca7488cdf14.
* Added a missing '=' in the second grep statement
* Added support for 4-byte addressing on >128Mb Macronix flash parts
Approved-by: Gregory Nutt <gnutt@nuttx.org>
Squashed commit of the following:
Change all calls to usleep() in the OS proper to calls to nxsig_usleep()
sched/signal: Add a new OS internal function nxsig_usleep() that is functionally equivalent to usleep() but does not cause a cancellaption point and does not modify the errno variable.
sched/signal: Add a new OS internal function nxsig_sleep() that is functionally equivalent to sleep() but does not cause a cancellaption point.
