qt4: Fix the include path for SGX PowerVR drivers
* Qt's PowerVR graphics driver plugin requires the PowerVR header files
pvr2d.h, wsegl.h to compile
* The current recipes copy the wsegl.h from Qt's src/3rdparty/powervr to
powervr graphics driver plugin directory - src/plugins/gfxdrivers/powervr.
* If/when the header files change, the incorrect wsegl.h will get picked up.
* This patch ensures that the header files are picked up from the SGX SDK
Signed-off-by: Anand Balagopalakrishnan <anandb@ti.com>
Signed-off-by: Koen Kooi <koen@openembedded.org>