sgx_src: Update sgx_src with missing files and platform rev

This files were missing from the previous commit. Also, set
default platform version to 5.0 to allow building KM
without Android enviornment.

Change-Id: I768a1824846ac07574ca3b78769dd4bf56628c80
Signed-off-by: Hemant Hariyani <hemanthariyani@ti.com>