initial buildroot for linux 5.15

package/madplay/Config.in

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+config BR2_PACKAGE_MADPLAY
+	bool "madplay"
+	select BR2_PACKAGE_LIBMAD
+	select BR2_PACKAGE_LIBID3TAG
+	help
+	  Command-line front-end to libmad, a high-quality MPEG audio
+	  decoder.  It currently supports MPEG-1 and the MPEG-2
+	  extension to lower sampling frequencies, as well as the de
+	  facto MPEG 2.5 format. All three audio layers - Layer I,
+	  Layer II, and Layer III (i.e. MP3) - are fully implemented.
+
+	  http://www.underbit.com/products/mad/
+
+if BR2_PACKAGE_MADPLAY
+
+config BR2_PACKAGE_MADPLAY_ALSA
+	bool
+	default y
+	depends on BR2_PACKAGE_ALSA_LIB
+
+endif