Add STP transport support for MIPI SyS-T with Kconfig MIPI_SYST_STP,
this is following SyS-T spec Section 7.
And with Kconfig MIPI_SYST_RAW_DATA, add raw data output support for
MIPI SyS-T protocol stack.
Signed-off-by: Wentong Wu <wentong.wu@intel.com>