Move all to deprecated folder.

deprecated/firmware/buildroot/package/libsigrokdecode/Config.in

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+config BR2_PACKAGE_LIBSIGROKDECODE
+	bool "libsigrokdecode"
+	select BR2_PACKAGE_LIBGLIB2
+	select BR2_PACKAGE_PYTHON3
+	depends on !BR2_PACKAGE_PYTHON # python3
+	depends on BR2_USE_WCHAR # libglib2/python3
+	depends on BR2_TOOLCHAIN_HAS_THREADS # libglib2/python3
+	depends on BR2_USE_MMU # libglib2/python3
+	depends on !BR2_STATIC_LIBS # python3
+	help
+	  Libsigrokdecode is a shared library written in C, which
+	  provides (streaming) protocol decoding functionality. Say
+	  yes here if you want to add this functionality to your
+	  buildroot-generated sigrok suite.
+
+	  This library is a part of the sigrok software suite.
+
+	  http://sigrok.org/wiki/Libsigrokdecode
+
+comment "libsigrokdecode needs a toolchain w/ wchar, threads, dynamic library"
+	depends on BR2_USE_MMU
+	depends on !BR2_PACKAGE_PYTHON
+	depends on !BR2_USE_WCHAR || !BR2_TOOLCHAIN_HAS_THREADS || BR2_STATIC_LIBS
+
+comment "libsigrokdecode is not compatible with python"
+	depends on BR2_USE_MMU
+	depends on BR2_PACKAGE_PYTHON

deprecated/firmware/buildroot/package/libsigrokdecode/libsigrokdecode.hash

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+# Locally computed
+sha256	fd7e9d1b73245e844ead97a16d5321c766196f946c9b28a8646cab2e98ec3537	libsigrokdecode-0.4.0.tar.gz

deprecated/firmware/buildroot/package/libsigrokdecode/libsigrokdecode.mk

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+################################################################################
+#
+# libsigrokdecode
+#
+################################################################################
+
+LIBSIGROKDECODE_VERSION = 0.4.0
+LIBSIGROKDECODE_SITE = http://sigrok.org/download/source/libsigrokdecode
+LIBSIGROKDECODE_LICENSE = GPLv3+
+LIBSIGROKDECODE_LICENSE_FILES = COPYING
+LIBSIGROKDECODE_INSTALL_STAGING = YES
+LIBSIGROKDECODE_DEPENDENCIES = host-pkgconf libglib2 python3
+
+$(eval $(autotools-package))