Introduce a new debug sysfs file, which accepts the following commands:
ps - show task running in firmware
banner - show startup banner
get_root - get ROOT object
heap - show heap statistics
irq - show irq statistics
semaphore - show semaphore status
wiring - show wiring status
get_object_by_name %s - get address for object
get_fsm_by_name %s - get address for FSM
dump_object %p - show information about object
dump_objects - dump all objects (NOTE: will crash firmware)
show_objects - show graph about all objects known
get_debug_level - get debug level for object
set_debug_level - set debug level for object
set_debug_level_rec - set debug level recursive for all objects
get_fsm_count - get count of FSM's
get_fsm_by_index - get fsm address for index
get_fsm_debug_level - get debug level for fsm
set_fsm_debug_level - set debug level for fsm
In the current implementation it returns -1 on error, an offset value
otherwise. Change it to return a negative error value, and add a pointer
to an u32 for receiving the entry offset as an extra argument.
This makes the ugly (u32)-1 return code comparision obsolete, and we
can return a more detailed error code like EAGAIN if all ringbuffer slots
are busy.
