Update git submodules

* Update docs/submodules/sdc.git from branch 'master'
  to b5cc5d63befc07120d0856a0e09b645aff88e4a3
  - Bump SDC version 1.5.2
    
    Change-Id: Ib672dc8d60a0b6f4b37fd94afe84bc27dfba4c44
    Issue-ID: SDC-2560
    Signed-off-by: Ofir Sonsino <os0695@intl.att.com>
    
1 file changed