Android: follow official android flags for cmake
Android: follow official android flags for cmake

Update our cflags and lflags with the ones found in <ndk_r19>/build/
cmake/android.toolchain.cmake

Task-number: QTBUG-73274
Change-Id: Ieb1923ffa6658fa917f7ead1e1bc036cf595f8bb
Reviewed-by: Christian Kandeler <3aa99dcdd3f0cac61fb81c2a11771c0cc2497607@qt.io>

qtproject/qt-labs-qbs,qtproject/qt-labs-qbs,qt-labs/qbs,qtproject/qt-labs-qbs,qt-labs/qbs,qt-labs/qbs,qt-labs/qbs,qt-labs/qbs,qt-labs/qbs,qtproject/qt-labs-qbs,qtproject/qt-labs-qbs,qtproject/qt-labs-qbs,qt-labs/qbs,qtproject/qt-labs-qbs