pkg/socketcan: add to resolve i386 support on Ubuntu

Ubuntu dropped i386 support for socketcan already a while ago.

pkg/libsocketcan/Kconfig

@@ -0,0 +1,10 @@
+# Copyright (c) ML!PA Consulting GmbH
+#
+# This file is subject to the terms and conditions of the GNU Lesser
+# General Public License v2.1. See the file LICENSE in the top level
+# directory for more details.
+#
+
+config PACKAGE_LIBSOCKETCAN
+    bool "libsocketcan2 32bit for native Linux builds"
+    depends on BOARD_NATIVE

pkg/libsocketcan/Makefile

@@ -0,0 +1,9 @@
+PKG_NAME=libsocketcan
+PKG_URL=https://git.pengutronix.de/git/tools/libsocketcan
+PKG_VERSION=077def398ad303043d73339112968e5112d8d7c8
+PKG_LICENSE=LGPL-2.1
+
+include $(RIOTBASE)/pkg/pkg.mk
+
+all:
+	$(QQ)"$(MAKE)" -C $(PKG_SOURCE_DIR)/src -f $(CURDIR)/Makefile.$(PKG_NAME)

pkg/libsocketcan/Makefile.include

@@ -0,0 +1 @@
+NATIVEINCLUDES += -I"$(PKGDIRBASE)/libsocketcan/include"

pkg/libsocketcan/Makefile.libsocketcan

@@ -0,0 +1,9 @@
+MODULE=libsocketcan
+
+CFLAGS += -Wno-strict-prototypes
+CFLAGS += -Wno-pointer-arith
+CFLAGS += -Wno-old-style-definition
+
+SRC += libsocketcan.c
+
+include $(RIOTBASE)/Makefile.base

pkg/libsocketcan/doc.txt

@@ -0,0 +1,16 @@
+/**
+ * @defgroup pkg_libsocketcan   Socketcan library
+ * @ingroup  pkg
+ * @ingroup  sys_serialization
+ * @brief    Provides libsocketcan for native 32bit linux builds when not available otherwise
+ *
+ * # Introduction
+ *
+ * "This library allows you to control some basic functions in SocketCAN from userspace."
+ *
+ * # License
+ *
+ * Licensed under LGPL 2.1.
+ *
+ * @see      https://git.pengutronix.de/cgit/tools/libsocketcan
+ */