patches/packages: libseccomp: add scmp_sys_resolver package

Fixes turris/turris-build#87

patches/packages/backport/0042-libseccomp-add-scmp_sys_resolver-package.patch

+From 8528aa137ad1cca17c5e55655fbe8f3b3e7b6fb8 Mon Sep 17 00:00:00 2001
+From: Josef Schlehofer <pepe.schlehofer@gmail.com>
+Date: Fri, 25 Oct 2019 04:11:29 +0200
+Subject: [PATCH] libseccomp: add scmp_sys_resolver package
+
+Signed-off-by: Josef Schlehofer <pepe.schlehofer@gmail.com>
+---
+ libs/libseccomp/Makefile | 12 ++++++++++++
+ 1 file changed, 12 insertions(+)
+
+diff --git a/libs/libseccomp/Makefile b/libs/libseccomp/Makefile
+index a53b95ac7..48fed66b0 100644
+--- a/libs/libseccomp/Makefile
++++ b/libs/libseccomp/Makefile
+@@ -53,6 +53,12 @@ $(call Package/libseccomp/Default)
+   TITLE+= (library)
+ endef
+ 
++define Package/scmp_sys_resolver
++$(call Package/libseccomp/Default)
++  TITLE+= scmp_sys_resolver
++  DEPENDS+= libseccomp
++endef
++
+ define Package/libseccomp/description
+  This package contains the seccomp library.
+ endef
+@@ -75,4 +81,10 @@ define Package/libseccomp/install
+ 	$(CP) $(PKG_INSTALL_DIR)/usr/lib/libseccomp.so.* $(1)/usr/lib/
+ endef
+ 
++define Package/scmp_sys_resolver/install
++	$(INSTALL_DIR) $(1)/usr/bin
++	$(CP) $(PKG_INSTALL_DIR)/usr/bin/scmp_sys_resolver $(1)/usr/bin/
++endef
++
+ $(eval $(call BuildPackage,libseccomp))
++$(eval $(call BuildPackage,scmp_sys_resolver))
+-- 
+2.20.1
+