Bump Buildroot to 2021.02-rc3 (#1260)

* Rebase patches to Buildroot 2021.02-rc3

* Update Buildroot to 2021.02-rc3

* Declare Kernel headers to be Linux version 5.10 (since they are, and new Buildroot knows about 5.10)

buildroot/package/iptables/0001-libxtables-compiler-warning-fixes-for-NO_SHARED_LIBS.patch

@@ -1,58 +0,0 @@
-From 6cb8af1ff3951e47def7a16db39289dc9d9c61fe Mon Sep 17 00:00:00 2001
-From: =?UTF-8?q?Maciej=20=C5=BBenczykowski?= <maze@google.com>
-Date: Tue, 23 Jun 2020 16:09:02 -0700
-Subject: libxtables: compiler warning fixes for NO_SHARED_LIBS
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-
-Fixes two issues with NO_SHARED_LIBS:
- - #include <dlfcn.h> is ifdef'ed out and thus dlclose()
-   triggers an undeclared function compiler warning
- - dlreg_add() is unused and thus triggers an unused
-   function warning
-
-Test: builds without warnings
-Signed-off-by: Maciej Żenczykowski <maze@google.com>
-Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
-
-[Retrieved from:
-https://git.netfilter.org/iptables/commit/libxtables/xtables.c?id=6cb8af1ff3951e47def7a16db39289dc9d9c61fe]
-Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
----
- libxtables/xtables.c | 4 ++++
- 1 file changed, 4 insertions(+)
-
-diff --git a/libxtables/xtables.c b/libxtables/xtables.c
-index 7fe42580..8907ba20 100644
---- a/libxtables/xtables.c
-+++ b/libxtables/xtables.c
-@@ -206,6 +206,7 @@ struct xtables_target *xtables_targets;
- static bool xtables_fully_register_pending_match(struct xtables_match *me);
- static bool xtables_fully_register_pending_target(struct xtables_target *me);
- 
-+#ifndef NO_SHARED_LIBS
- /* registry for loaded shared objects to close later */
- struct dlreg {
- 	struct dlreg *next;
-@@ -237,6 +238,7 @@ static void dlreg_free(void)
- 		dlreg = next;
- 	}
- }
-+#endif
- 
- void xtables_init(void)
- {
-@@ -267,7 +269,9 @@ void xtables_init(void)
- 
- void xtables_fini(void)
- {
-+#ifndef NO_SHARED_LIBS
- 	dlreg_free();
-+#endif
- }
- 
- void xtables_set_nfproto(uint8_t nfproto)
--- 
-cgit v1.2.3
-

buildroot/package/iptables/iptables.hash

@@ -1,4 +1,4 @@
 # From https://netfilter.org/projects/iptables/downloads.html
-sha256  d457d74512e63aa3f50336e0597d4023c0e3c6845594d38532efb6ebcb294309  iptables-1.8.5.tar.bz2
+sha256  a0f4fe0c3eb8faa5bd9c8376d132f340b9558e750c91deb2d5028aa3d0047767  iptables-1.8.6.tar.bz2
 # Locally calculated
 sha256  8177f97513213526df2cf6184d8ff986c675afb514d4e68a404010521b880643  COPYING

buildroot/package/iptables/iptables.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-IPTABLES_VERSION = 1.8.5
+IPTABLES_VERSION = 1.8.6
 IPTABLES_SOURCE = iptables-$(IPTABLES_VERSION).tar.bz2
 IPTABLES_SITE = https://netfilter.org/projects/iptables/files
 IPTABLES_INSTALL_STAGING = YES
@@ -12,6 +12,9 @@ IPTABLES_DEPENDENCIES = host-pkgconf \
 	$(if $(BR2_PACKAGE_LIBNETFILTER_CONNTRACK),libnetfilter_conntrack)
 IPTABLES_LICENSE = GPL-2.0
 IPTABLES_LICENSE_FILES = COPYING
+IPTABLES_CPE_ID_VENDOR = netfilter
+IPTABLES_SELINUX_MODULES = iptables
+
 # Building static causes ugly warnings on some plugins
 IPTABLES_CONF_OPTS = --libexecdir=/usr/lib --with-kernel=$(STAGING_DIR)/usr \
 	$(if $(BR2_STATIC_LIBS),,--disable-static)