media: MAINTAINERS: Fix path for J721E CSI2RX bindings

Fix the path of the devicetree bindings. The path was changed during
review but MAINTAINERS file was not updated.

Fixes: b4a3d877 ("media: ti: Add CSI2RX support for J721E")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202310130411.c66pTXjG-lkp@intel.com/


Signed-off-by: Jai Luthra <j-luthra@ti.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>