Revert "remove invoke-as"

This reverts commit c8162476811c27f81895156034fa090549aa3ddb.
Revert "galaxys2: add property for legacy egl"

This reverts commit 66f631fa0d95898b5a3311d24a2ac810d166a35f.
Revert "BoardCommonConfig: Add LEGACY_EGL flag"

This reverts commit 24ff430e1d4873f056bbfb9682dd38166345e6ee.