MAINTAINERS: arm,pl353-smc: correct dt-binding path

Commit de67fa80

 ("dt-bindings: memory-controllers: arm,pl353-smc:
Extend to support 'arm,pl354' SMC") renames the arm,pl353-smc.yaml
memory-controller dt-binding, but misses to adjust its reference in
MAINTAINERS.

Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Link: https://lore.kernel.org/r/20221031110223.30203-1-lukas.bulwahn@gmail.com


Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>