drivers: sensors: add sensors ssc driver

SLPI (sensor low power island) uses Qualcomm Technologies, Inc
Digital Signal Processor for all sensors connected via SPI/I2C.
Firmware is required to be loaded to enable these sensors and
algorithms to execute on DSP. This change adds driver to load
the firmware.

This snapshot is taken as of msm-4.19 'commit
<db92782eadcfd7e8186f6f7487194ebbf8c31c19> (Merge "icnss:
Reduce the shutdown timeout from 50sec to 15sec")'.
In addition change copyrights, type and description in KConfig
and directory change from sensors to soc/qcom.

Change-Id: I15350924e7febe287dc9d7e21885b2e11426a2cc
Signed-off-by: Jun-Hyung Kwon <junhyung@codeaurora.org>