MAINTAINERS: update email address for Leif Lindholm

MAINTAINERS: update email address for Leif Lindholm

I'm migrating to Qualcomm's new open source email infrastructure, so
update my email address, and update the mailmap to match.

Signed-off-by: Leif Lindholm <leif.lindholm@oss.qualcomm.com>
Reviewed-by: Leif Lindholm <quic_llindhol@quicinc.com>
Reviewed-by: Brian Cain <brian.cain@oss.qualcomm.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Tested-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-id: 20241205114047.1125842-1-leif.lindholm@oss.qualcomm.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>