Update git submodules

* Update docs/submodules/sdc.git from branch 'master'
  to 55c536e65dcbd1981de61c6c8bea318585324d22
  - Update SDC version 1.5.0
    
    Change-Id: I22d2273103230bd9ee7c3655b5f33e4308bb9f92
    Issue-ID: SDC-1913
    Signed-off-by: Sonsino, Ofir (os0695) <os0695@intl.att.com>
    
1 file changed