Update git submodules

* Update docs/submodules/usecase-ui.git from branch 'master'
  to 52682bdf7ebddc6ccc5455e3b988ff7d5949601a
  - Fix instance instantiation for NS
    
    Change-Id: I96ebbaf680aa7f0976785a9ee478d1fac052f4c2
    Issue-ID: USECASEUI-255
    Signed-off-by: guochuyicmri <guochuyi@chinamobile.com>
    
1 file changed