Fix gles lib loading on Android

Setting the version breaks on Android as it has no .so versions, leading
to aborting apps on devices that support GLES 3.x.

Change-Id: Id4381e08a2615a0898def8f075ce5a5c5b9c7a7d
Reviewed-by: Jaeyoon Jung <jaeyoon.jung@lge.com>
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@theqtcompany.com>

src/gui/opengl/qopenglfunctions.cpp

@@ -3216,7 +3216,11 @@ bool QOpenGLES3Helper::init()
     m_gl.setFileName(QStringLiteral("libGLESv2d"));
 #  endif
 # else
+#  ifdef Q_OS_ANDROID
+    m_gl.setFileName(QStringLiteral("GLESv2"));
+#  else
     m_gl.setFileNameAndVersion(QStringLiteral("GLESv2"), 2);
+#  endif
 # endif // Q_OS_WIN
     return m_gl.load();
 #else