MAINTAINERS: adjust file entries after adding vendor prefix in sound dtbs

MAINTAINERS: adjust file entries after adding vendor prefix in sound dtbs

Commit ae8fc2948b48 ("ASoC: dt-bindings: add missing vender prefix on
filename") renames a few files in Documentation/devicetree/bindings/sound/,
but misses to adjust the file entries pointing to those files in
MAINTAINERS.

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

Adjust the file entries in NXP SGTL5000 DRIVER and TEXAS INSTRUMENTS AUDIO
(ASoC/HDA) DRIVERS.

Signed-off-by: Lukas Bulwahn <lukas.bulwahn@redhat.com>
Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://patch.msgid.link/20240625033419.149775-1-lukas.bulwahn@redhat.com
Signed-off-by: Mark Brown <broonie@kernel.org>