classes: bundle: use fatal() instead of FuncFailed
classes: bundle: use fatal() instead of FuncFailed

According to Wiki Yoctoproject FuncFailed is deprecated with 3.0, see
https://wiki.yoctoproject.org/wiki/FutureMigrationGuide section "Bitbake
changes".

Fixes https://github.com/rauc/meta-rauc/issues/162

Signed-off-by: Rouven Czerwinski <76cf81876f6bd9c36f3e19bf926d3e7bc1d0dc80@pengutronix.de>

rauc/meta-rauc,rauc/meta-rauc,rauc/meta-rauc,rauc/meta-rauc