Update git submodules

* Update docs/submodules/sdc.git from branch 'master'
  to ee64a64fb0705422c18608304e63a505d10d8ba1
  - Handle onboard ALTER tables to support upgrade
    
    Change-Id: I6c96aecccf00a3b02bf07cf172ff752b69d3cc94
    Issue-ID: SDC-2640
    Signed-off-by: Ben David, Elad (eb7504) <eb7504@intl.att.com>
    
1 file changed