Update Buildroot to 2021.02 (#1274)

buildroot/package/dhcpcd/0009-src-privsep-linux.c-add-support-for-or1k-27.patch

@@ -0,0 +1,41 @@
+From 617e3a44137cbba55afae24f6754580916bb770b Mon Sep 17 00:00:00 2001
+From: Fabrice Fontaine <fontaine.fabrice@gmail.com>
+Date: Sun, 7 Feb 2021 09:43:14 +0100
+Subject: [PATCH] src/privsep-linux.c: add support for or1k (#27)
+
+Fix the following build failure:
+
+privsep-linux.c:206:4: error: #error "Platform does not support seccomp filter yet"
+ #  error "Platform does not support seccomp filter yet"
+    ^~~~~
+In file included from privsep-linux.c:36:
+privsep-linux.c:213:38: error: 'SECCOMP_AUDIT_ARCH' undeclared here (not in a function); did you mean 'SECCOMP_ALLOW_ARG'?
+  BPF_JUMP(BPF_JMP + BPF_JEQ + BPF_K, SECCOMP_AUDIT_ARCH, 1, 0),
+                                      ^~~~~~~~~~~~~~~~~~
+
+It should be noted that AUDIT_ARCH_OPENRISC is defined since kernel 3.7:
+https://github.com/torvalds/linux/commit/e2bebb4ae6d9ac4ffc524db67f7ecb205a173f77
+
+Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
+(cherry picked from commit f3f7332001d5d5722239f6b7279f32923e4eedd0)
+Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
+---
+ src/privsep-linux.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/src/privsep-linux.c b/src/privsep-linux.c
+index 8093740a..58df5c30 100644
+--- a/src/privsep-linux.c
++++ b/src/privsep-linux.c
+@@ -192,6 +192,8 @@ ps_root_sendnetlink(struct dhcpcd_ctx *ctx, int protocol, struct msghdr *msg)
+ #endif
+ #elif defined(__nios2__)
+ #  define SECCOMP_AUDIT_ARCH AUDIT_ARCH_NIOS2
++#elif defined(__or1k__)
++#  define SECCOMP_AUDIT_ARCH AUDIT_ARCH_OPENRISC
+ #elif defined(__powerpc64__)
+ #  define SECCOMP_AUDIT_ARCH AUDIT_ARCH_PPC64
+ #elif defined(__powerpc__)
+-- 
+2.29.2
+