MAINTAINERS: eth: mt7530: move Landen Chao to CREDITS

mt7530 is a pretty active driver and last we have heard
from Landen Chao on the list was March. There were total
of 4 message from them in the last 2.5 years.
I think it's time to move to CREDITS.

Subsystem MEDIATEK SWITCH DRIVER
  Changes 94 / 169 (55%)
  Last activity: 2023-10-11
  Arınç ÜNAL <arinc.unal@arinc9.com>:
    Author e94b590a 2023-08-19 00:00:00 12
    Tags e94b590a 2023-08-19 00:00:00 16
  Daniel Golle <daniel@makrotopia.org>:
    Author 91daa4f6 2023-04-19 00:00:00 17
    Tags ac49b992 2023-10-11 00:00:00 20
  Landen Chao <Landen.Chao@mediatek.com>:
  DENG Qingfang <dqfext@gmail.com>:
    Author 342afce1 2021-10-18 00:00:00 24
    Tags 342afce1 2021-10-18 00:00:00 25
  Sean Wang <sean.wang@mediatek.com>:
    Tags c288575f 2020-09-14 00:00:00 5
  Top reviewers:
    [46]: f.fainelli@gmail.com
    [29]: andrew@lunn.ch
    [19]: olteanv@gmail.com
  INACTIVE MAINTAINER Landen Chao <Landen.Chao@mediatek.com>

Acked-by: Arınç ÜNAL <arinc.unal@arinc9.com>
Link: https://lore.kernel.org/r/20240109164517.3063131-3-kuba@kernel.org


Signed-off-by: Jakub Kicinski <kuba@kernel.org>