Add below two APIs to qcom_scm_addons,
1. qcom_scm_she_op : SMC call required from SHE UMD.
2. qcom_scm_ddrbw_profiler : SMCC call to get DDR BW
   data from TZ and support DDR BW profiling driver.

Change-Id: I47733b3f678d141982bd0715072e0591358f2c8b
Signed-off-by: Ninad Naik <quic_ninanaik@quicinc.com>