Opening /dev/umts_boot0 pipe and ioctl configuration should be done in the HAL plugin...

Opening /dev/umts_boot0 pipe and ioctl configuration should be done in the HAL plugin or according the HAL plugin Accordingly, transfer IP data stream configuration code of tel-plugin-imc/src/s_ps.c to tel-plugin-imcmodem/src/desc-imcmodem.c

- libtcore/src/mux.c
Currently, when hal operation is called in IMC go through mux hal.
But, this code is temporary code.
If to mapping become completed, we will call that operation.

- libtcore/src/co_context.c, libtcore/include/c_context.h
Added code in order to remove notification TNOTI_PS_PDP_IPCONFIGURATION and structure tnoti_ps_pdp_ipconfiguration(Philippe's feedback)
In addition, duplicated variables in structure private_object_data([addr,ip_v4], [dns1,dns_primary_v4], ...)
will be modifed later.

- tel-plugin-imc/src/s_ps.c, tel-plugin-imcmode/src/desc-imcmodem.c
Reflect the Guillaume's feedback
You can see feedback below url
https://tizendev.org/gerrit/#/c/15841/

Change-Id: I9d6b279db1d18b8eac4aaf3879176f842cc0d392