MAINTAINERS: Use Daniel Thompson's korg address for kgdb work

Going forward, I'll be using my kernel.org address for upstream work.

Reviewed-by: Douglas Anderson <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Daniel Thompson <[email protected]>

Author: Daniel Thompson

MAINTAINERS

@@ -12659,7 +12659,7 @@ F:	samples/kfifo/
 
 KGDB / KDB /debug_core
 M:	Jason Wessel <[email protected]>
-M:	Daniel Thompson <daniel.thompson@linaro.org>
+M:	Daniel Thompson <danielt@kernel.org>
 R:	Douglas Anderson <[email protected]>
 L:	[email protected]
 S:	Maintained