The GPU in question supports GL 2 but not framebuffer objects. Since we
anyway have a font rendering path that doesn't use FBOs we might as well
not require framebuffer objects in order to use the GL 2 engine.
Task-number: QTBUG-22483
Change-Id: I2a80343fedda276e73e603ffe54edff58801af5b
Reviewed-by: Kim M. Kalland <kim.kalland@nokia.com>
(cherry picked from commit
f13d0078d9f829cde2cd5b8b9eac40635a883ec6)