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

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

Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
Link: https://lore.kernel.org/r/20241108-new-maintainer-address-2-v1-1-47c9d71aac11@linaro.org
Signed-off-by: Lee Jones <lee@kernel.org>

Author: Daniel Thompson

MAINTAINERS

@@ -3803,7 +3803,7 @@ F:	drivers/net/wireless/broadcom/b43legacy/
 
 BACKLIGHT CLASS/SUBSYSTEM
 M:	Lee Jones <lee@kernel.org>
-M:	Daniel Thompson <daniel.thompson@linaro.org>
+M:	Daniel Thompson <danielt@kernel.org>
 M:	Jingoo Han <jingoohan1@gmail.com>
 L:	dri-devel@lists.freedesktop.org
 S:	Maintained