MAINTAINERS: Change maintainer for IDXD

Due to job transition, I am stepping down as IDXD maintainer.
Vinicius will take over maintainership responsibilities moving forward.

Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Acked-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/20250131173551.3979408-1-fenghua.yu@intel.com


Signed-off-by: Vinod Koul <vkoul@kernel.org>