feat(intel): add SiP service for DCMF status

This patch adds 2 additional RSU SiP services for Intel SoCFPGA
platforms:
- INTEL_SIP_SMC_RSU_COPY_DCMF_STATUS stores current DCMF status in
  BL31
- INTEL_SIP_SMC_RSU_DCMF_STATUS is calling function for non-secure
  software to retrieve stored DCMF status

Signed-off-by: Abdul Halim, Muhammad Hadi Asyrafi <muhammad.hadi.asyrafi.abdul.halim@intel.com>
Signed-off-by: Jit Loon Lim <jit.loon.lim@intel.com>
Signed-off-by: Sieu Mun Tang <sieu.mun.tang@intel.com>
Change-Id: Ic7a3e6988c71ad4bf66c58a1d669956524dfdf11
2 files changed