MAINTAINERS: eth: mtk: move John to CREDITS

John is still active in other bits of the kernel but not much
on the MediaTek ethernet switch side. Our scripts report:

Subsystem MEDIATEK ETHERNET DRIVER
  Changes 81 / 384 (21%)
  Last activity: 2023-12-21
  Felix Fietkau <nbd@nbd.name>:
    Author c6d96df9 2023-05-02 00:00:00 42
    Tags c6d96df9 2023-05-02 00:00:00 48
  John Crispin <john@phrozen.org>:
  Sean Wang <sean.wang@mediatek.com>:
    Author 880c2d4b 2019-06-03 00:00:00 5
    Tags a5d75538 2020-04-07 00:00:00 7
  Mark Lee <Mark-MC.Lee@mediatek.com>:
    Author 8d66a818 2019-11-14 00:00:00 4
    Tags 8d66a818 2019-11-14 00:00:00 4
  Lorenzo Bianconi <lorenzo@kernel.org>:
    Author 7cb8cd4d 2023-12-21 00:00:00 98
    Tags 7cb8cd4d 2023-12-21 00:00:00 112
  Top reviewers:
    [18]: horms@kernel.org
    [15]: leonro@nvidia.com
    [8]: rmk+kernel@armlinux.org.uk
  INACTIVE MAINTAINER John Crispin <john@phrozen.org>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: John Crispin <john@phrozen.org>
Link: https://lore.kernel.org/r/20240109164517.3063131-2-kuba@kernel.orgSigned-off-by: Jakub Kicinski <kuba@kernel.org>

CREDITS

@@ -814,6 +814,10 @@ D: Support for Xircom PGSDB9 (firmware and host driver)
 S: Bucharest
 S: Romania
 
+N: John Crispin
+E: john@phrozen.org
+D: MediaTek MT7623 Gigabit ethernet support
+
 N: Laurence Culhane
 E: loz@holmes.demon.co.uk
 D: Wrote the initial alpha SLIP code

MAINTAINERS

@@ -13509,7 +13509,6 @@ F:	drivers/dma/mediatek/
 
 MEDIATEK ETHERNET DRIVER
 M:	Felix Fietkau <nbd@nbd.name>
-M:	John Crispin <john@phrozen.org>
 M:	Sean Wang <sean.wang@mediatek.com>
 M:	Mark Lee <Mark-MC.Lee@mediatek.com>
 M:	Lorenzo Bianconi <lorenzo@kernel.org>