Doc: Mention OpenGL issues in FAQ section
Doc: Mention OpenGL issues in FAQ section

Change-Id: Ia185f15cfdb6106e2212a21ebe4c6b84c9da1fc6
Reviewed-by: Leena Miettinen <885fda02d52616fec24ed5fed9b3f0568fce3ead@digia.com>

danimo/qt-creator,martyone/sailfish-qtcreator,kuba1/qtcreator,danimo/qt-creator,farseerri/git_code,danimo/qt-creator,martyone/sailfish-qtcreator,danimo/qt-creator,AltarBeastiful/qt-creator,kuba1/qtcreator,Distrotech/qtcreator,farseerri/git_code,farseerri/git_code,AltarBeastiful/qt-creator,martyone/sailfish-qtcreator,kuba1/qtcreator,Distrotech/qtcreator,xianian/qt-creator,AltarBeastiful/qt-creator,kuba1/qtcreator,martyone/sailfish-qtcreator,AltarBeastiful/qt-creator,amyvmiwei/qt-creator,Distrotech/qtcreator,Distrotech/qtcreator,maui-packages/qt-creator,kuba1/qtcreator,AltarBeastiful/qt-creator,amyvmiwei/qt-creator,farseerri/git_code,farseerri/git_code,Distrotech/qtcreator,xianian/qt-creator,maui-packages/qt-creator,farseerri/git_code,maui-packages/qt-creator,amyvmiwei/qt-creator,martyone/sailfish-qtcreator,danimo/qt-creator,kuba1/qtcreator,kuba1/qtcreator,danimo/qt-creator,maui-packages/qt-creator,amyvmiwei/qt-creator,xianian/qt-creator,amyvmiwei/qt-creator,xianian/qt-creator,danimo/qt-creator,AltarBeastiful/qt-creator,amyvmiwei/qt-creator,xianian/qt-creator,maui-packages/qt-creator,amyvmiwei/qt-creator,martyone/sailfish-qtcreator,xianian/qt-creator,xianian/qt-creator,farseerri/git_code,AltarBeastiful/qt-creator,kuba1/qtcreator,martyone/sailfish-qtcreator,martyone/sailfish-qtcreator,Distrotech/qtcreator,maui-packages/qt-creator,martyone/sailfish-qtcreator,xianian/qt-creator,AltarBeastiful/qt-creator,xianian/qt-creator,danimo/qt-creator,amyvmiwei/qt-creator,Distrotech/qtcreator,farseerri/git_code,maui-packages/qt-creator,danimo/qt-creator,kuba1/qtcreator