initial buildroot for linux 5.15

package/libebur128/Config.in

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+config BR2_PACKAGE_LIBEBUR128
+	bool "libebur128"
+	# build system has no support to disable shared linking
+	# leading to a build error with a static-only toolchain
+	depends on !BR2_STATIC_LIBS
+	help
+	  libebur128 is a library that implements the EBU R 128 standard
+	  for loudness normalization.
+
+	  https://github.com/jiixyj/libebur128
+
+comment "libebur128 needs a toolchain w/ dynamic library"
+	depends on BR2_STATIC_LIBS

package/libebur128/libebur128.hash

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+# Locally computed
+sha256  baa7fc293a3d4651e244d8022ad03ab797ca3c2ad8442c43199afe8059faa613  libebur128-1.2.6.tar.gz
+sha256  d6b4754bb67bdd08b97d5d11b2d7434997a371585a78fe77007149df3af8d09c  COPYING

package/libebur128/libebur128.mk

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+################################################################################
+#
+# libebur128
+#
+################################################################################
+
+LIBEBUR128_VERSION = 1.2.6
+LIBEBUR128_SITE = $(call github,jiixyj,libebur128,v$(LIBEBUR128_VERSION))
+LIBEBUR128_LICENSE = MIT
+LIBEBUR128_LICENSE_FILES = COPYING
+LIBEBUR128_INSTALL_STAGING = YES
+
+$(eval $(cmake-package))