Split mesh_util.h into mesh_byteorder.h, mesh_compiler.h,
mesh_ffs.h and mesh_util.h based on the classification of
Zephyr, which will make further porting more clear.
1. Add an API to set Provisioner static oob value
2. Add an API to deinit BLE Mesh stack
3. Add an API to set Provisioner unicast address
4. Add an API to provision devices with fixed address
5. Add an API to store node composition data
6. Add an API to get node with device uuid
7. Add an API to get node with unicast address
8. Add an API to delete node with device uuid
9. Add an API to delete node with unicast address
10. Add an API for Provisioner to update local AppKey
11. Add an API for Provisioner to update local NetKey
12. Support Provisioner persistent functionality
13. Fix Provisioner entering IV Update procedure
14. Fix an issue which may cause client failing to send msg
15. Use bt_mesh.flags to indicate device role
16. Remove several useless macros
17. Callback RSSI of received mesh provisioning packets
18. Modify the Provisioner disable function
19. Change some log level from debug to info
20. Add parameters to Provisioner bind AppKey completion event
21. Fix node ignoring relay messages issue
22. Support using a specific partition for BLE Mesh
23. Fix compile warning when proxy related macros are disabled
24. Clean up BLE Mesh stack included header files
25. NULL can be input if client message needs no parameters
26. Fix compile warning when BT log is disabled
27. Initilize BLE Mesh stack local variables
28. Support using PSRAM for BLE Mesh mutex, queue and task
29. Add a menuconfig option to enable using memory from PSRAM
30. Clean up sdkconfig.defaults of BLE Mesh examples
When node is being reset, the init functions of each sig-defined
models will be invoked again, this will cause memory leak because
some model internal data will be allocated again.
Hence before trying to allocate memory for them, we add some check
to make sure no memory has been allocated previously.
And for client model, when the init functions are invoked again,
we will clear the list items.
