Changes the nanokernel stack API so that the timeout parameter must be
specified when invoking nano_isr_stack_pop(), nano_fiber_stack_pop(),
nano_task_stack_pop() and nano_stack_pop().
This obsoletes the following APIs:
nano_fiber_stack_pop_wait()
nano_task_stack_pop_wait()
nano_stack_pop_wait()
Note that even though the new API requires that the timeout parameter
be specified, there are currently only two acceptable values:
TICKS_NONE and TICKS_UNLIMITED
This nanokernel option does not support CONFIG_NANO_TIMEOUTS.
Change-Id: Ic7f16ee30c3534115ceffa19ef8591ecc5a79080
Signed-off-by: Peter Mitsis <peter.mitsis@windriver.com>