Update 'linux rasp pi3 vc4 g++ X11 EGLFS'

linux-rasp-pi3-vc4-g%2B%2B-X11-EGLFS.md

@@ -12,11 +12,17 @@ sudo apt-get install mesa-utils libegl1-mesa libegl1-mesa-dev libgbm-dev libgbm1
 
 ```
 
-Configuration:
+Configuration (vc4):
 ```
 ../configure -release -nomake tests -nomake examples -skip wayland -skip qtscript -skip qtwebengine -device linux-rasp-pi3-vc4-g++ -device-option CROSS_COMPILE=/media/mehran/extra3/Qt5Pi3X11/raspi/tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian/bin/arm-linux-gnueabihf- -sysroot /media/mehran/extra3/Qt5Pi3X11/raspi/sysroot -opensource -confirm-license -make libs -prefix /usr/local/qt5pi -extprefix /media/mehran/extra3/Qt5Pi3X11/raspi/qt5pi -hostprefix /media/mehran/extra3/Qt5Pi3X11/raspi/qt5 -v -no-use-gold-linker
 ```
 
+Configuration (xcb + old eglfs method):
+```
+../configure -release -opengl es2 -make libs -nomake tests -nomake examples -skip wayland -skip qtscript -skip qtwebengine -skip location -device linux-rasp-pi-g++ -device-option CROSS_COMPILE=/media/mehran/extra3/Qt5Pi3X11/raspi/tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian/bin/arm-linux-gnueabihf- -sysroot /media/mehran/extra3/Qt5Pi3X11/raspi/sysroot -opensource -confirm-license -make libs -prefix /usr/local/qt5pi -extprefix /media/mehran/extra3/Qt5Pi3X11/raspi/qt5pi -hostprefix /media/mehran/extra3/Qt5Pi3X11/raspi/qt5 -v -no-use-gold-linker
+
+```
+
 sources:
 
 https://www.raspberrypi.org/forums/viewtopic.php?t=272855