ti: omap: MAINTAINERS: move Benoît Cousson to CREDITS

Last email from Benoît Cousson was in 2014 [1], so remove him from
maintainers of the TI OMAP platform.  Stale maintainer entries hide
information whether subsystem needs help, has a bus-factor or is even
orphaned.

Benoît Cousson, thank you for TI OMAP contributions and maintenance.

[1] https://lore.kernel.org/all/?q=f%3Abcousson%40baylibre.com



Acked-by: Benoît Cousson <bcousson@baylibre.com>
Cc: Benoît Cousson <bcousson@baylibre.com>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20240612084038.18519-1-krzysztof.kozlowski@linaro.org


Signed-off-by: Arnd Bergmann <arnd@arndb.de>