MAINTAINERS: Update role for IDXD driver

Move Dave Jiang to reviewer role since he has not been working on the
driver.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Link: https://lore.kernel.org/r/20240415182055.3465170-1-fenghua.yu@intel.com


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