alsa-utils: fix packaging of alsabat

alsa-utils: fix packaging of alsabat

If bat is in PACKAGECONFIG two additional binaries are created which
by the dynamic package split creates two additional packages.
However due to explicitely adding the file alsabat-test.sh to the
alsabat package the alsa-utils-alsabat-test package now is empty
and not created.

Complete commit 4c6d5f96990d ("alsa-utils: fix packaging") which fixed
the same issue for all other affected packages.

Fixes: 26a28ee79350 ("alsa-utils: dynamically split the packages instead of doing it manually")
Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Signed-off-by: Ross Burton <ross.burton@arm.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>