MAINTAINERS: rectify entry for SYNOPSYS AXS10x RESET CONTROLLER DRIVER

Commit 820f722c ("dt-bindings: reset: snps,axs10x-reset: Convert to
yaml") converts snps,axs10x-reset.txt to yaml, but misses to adjust its
reference in MAINTAINERS.

Hence, ./scripts/get_maintainer.pl --self-test=patterns complains about a
broken reference.

Repair this file reference in SYNOPSYS AXS10x RESET CONTROLLER DRIVER.

Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Link: https://lore.kernel.org/r/20220601082239.12009-1-lukas.bulwahn@gmail.com