update Sean's email address

update Sean's email address

Soon I will no longer be working at SECO.  Update the mailmap to redirect
to my linux.dev address which I still have access to.

Link: https://lkml.kernel.org/r/20260407164722.211610-1-sean.anderson@linux.dev
Signed-off-by: Sean Anderson <sean.anderson@linux.dev>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Cc: Sean Anderson <sean.anderson@seco.com>
Cc: Conor Dooley <conor+dt@kernel.org>
Cc: Daniel Lezcano <daniel.lezcano@kernel.org>
Cc: Rob Herring <robh@kernel.org>
Cc: Thomas Gleixner <tglx@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>