ASoC: cs-amp-lib-test: Don't select SND_SOC_CS_AMP_LIB

Depend on SND_SOC_CS_AMP_LIB instead of selecting it.

KUNIT_ALL_TESTS should only build tests for components that are
already being built, it should not cause other stuff to be added
to the build.

Fixes: 1778623 ("ASoC: cs-amp-lib: Add KUnit test for calibration helpers")
Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Link: https://patch.msgid.link/20250411123608.1676462-3-rf@opensource.cirrus.com
Reviewed-by: David Gow <davidgow@google.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

Author: rfvirgil

sound/soc/codecs/Kconfig

@@ -776,10 +776,9 @@ config SND_SOC_CS_AMP_LIB
 	tristate
 
 config SND_SOC_CS_AMP_LIB_TEST
-	tristate "KUnit test for Cirrus Logic cs-amp-lib"
-	depends on KUNIT
+	tristate "KUnit test for Cirrus Logic cs-amp-lib" if !KUNIT_ALL_TESTS
+	depends on SND_SOC_CS_AMP_LIB && KUNIT
 	default KUNIT_ALL_TESTS
-	select SND_SOC_CS_AMP_LIB
 	help
 	  This builds KUnit tests for the Cirrus Logic common
 	  amplifier library.