runc: depend on linux headers >= 3.11 for O_TMPFILE

Fixes:
http://autobuild.buildroot.net/results/63e9d88ae5177541be463f1e2aafec59aa410479

Add dependency on headers >= 3.11 for O_TMPFILE, used by runc after the
fix for CVE-2019-5736 and propagate to the reverse dependencies of runc.

Notice that C library support for O_TMPFILE is also needed, which was added
in glibc 2.19 and musl 0.9.15.

Signed-off-by: Christian Stewart <christian@paral.in>
[Peter: squash series, extend commit message, mention C library dependency,
	fix indentation]
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

(cherry picked from commit 905e976a6af224b3ed015c46fcea2d717c155f55)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/docker-containerd/Config.in

@@ -3,6 +3,7 @@ config BR2_PACKAGE_DOCKER_CONTAINERD
 	depends on BR2_PACKAGE_HOST_GO_ARCH_SUPPORTS
 	depends on BR2_PACKAGE_HOST_GO_CGO_LINKING_SUPPORTS
 	depends on BR2_TOOLCHAIN_HAS_THREADS
+	depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_11 # runc
 	depends on !BR2_TOOLCHAIN_USES_UCLIBC # runc
 	depends on BR2_USE_MMU # util-linux
 	select BR2_PACKAGE_RUNC # runtime dependency
@@ -32,4 +33,5 @@ comment "docker-containerd needs a glibc or musl toolchain w/ threads"
 	depends on BR2_PACKAGE_HOST_GO_ARCH_SUPPORTS
 	depends on BR2_PACKAGE_HOST_GO_CGO_LINKING_SUPPORTS
 	depends on BR2_USE_MMU
-	depends on !BR2_TOOLCHAIN_HAS_THREADS || BR2_TOOLCHAIN_USES_UCLIBC
+	depends on !BR2_TOOLCHAIN_HAS_THREADS || \
+		!BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_11 || BR2_TOOLCHAIN_USES_UCLIBC

package/docker-engine/Config.in

@@ -3,6 +3,7 @@ config BR2_PACKAGE_DOCKER_ENGINE
 	depends on BR2_PACKAGE_HOST_GO_ARCH_SUPPORTS
 	depends on BR2_PACKAGE_HOST_GO_CGO_LINKING_SUPPORTS
 	depends on BR2_TOOLCHAIN_HAS_THREADS
+	depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_11 # docker-containerd -> runc
 	depends on !BR2_TOOLCHAIN_USES_UCLIBC # docker-containerd -> runc
 	depends on BR2_USE_MMU # docker-containerd
 	select BR2_PACKAGE_DOCKER_CONTAINERD # runtime dependency
@@ -50,8 +51,9 @@ config BR2_PACKAGE_DOCKER_ENGINE_DRIVER_VFS
 
 endif
 
-comment "docker-engine needs a glibc or musl toolchain w/ threads"
+comment "docker-engine needs a glibc or musl toolchain w/ threads, headers >= 3.11"
 	depends on BR2_PACKAGE_HOST_GO_ARCH_SUPPORTS
 	depends on BR2_PACKAGE_HOST_GO_CGO_LINKING_SUPPORTS
-	depends on !BR2_TOOLCHAIN_HAS_THREADS || BR2_TOOLCHAIN_USES_UCLIBC
+	depends on !BR2_TOOLCHAIN_HAS_THREADS || \
+		!BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_11 || BR2_TOOLCHAIN_USES_UCLIBC
 	depends on BR2_USE_MMU

package/runc/Config.in

@@ -3,6 +3,7 @@ config BR2_PACKAGE_RUNC
 	depends on BR2_PACKAGE_HOST_GO_ARCH_SUPPORTS
 	depends on BR2_PACKAGE_HOST_GO_CGO_LINKING_SUPPORTS
 	depends on BR2_TOOLCHAIN_HAS_THREADS
+	depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_11 # O_TMPFILE
 	depends on !BR2_TOOLCHAIN_USES_UCLIBC # no fexecve
 	help
 	  runC is a CLI tool for spawning and running containers
@@ -10,7 +11,8 @@ config BR2_PACKAGE_RUNC
 
 	  https://github.com/opencontainers/runc
 
-comment "runc needs a glibc or musl toolchain toolchain w/ threads"
+comment "runc needs a glibc or musl toolchain w/ threads, headers >= 3.11"
 	depends on BR2_PACKAGE_HOST_GO_ARCH_SUPPORTS && \
 		BR2_PACKAGE_HOST_GO_CGO_LINKING_SUPPORTS
-	depends on !BR2_TOOLCHAIN_HAS_THREADS || BR2_TOOLCHAN_USES_UCLIBC
+	depends on !BR2_TOOLCHAIN_HAS_THREADS || \
+		!BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_11 || BR2_TOOLCHAN_USES_UCLIBC