transmission: convert seccomp filter rules to OCI format

procd-seccomp switched to OCI-compliant seccomp parser instead of our
(legacy, OpenWrt-specific) format. Convert ruleset to new format.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>

net/transmission/Makefile

@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=transmission
 PKG_VERSION:=3.00
-PKG_RELEASE:=7
+PKG_RELEASE:=8
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
 PKG_SOURCE_URL:=@GITHUB/transmission/transmission-releases/master

net/transmission/files/transmission-daemon.json

@@ -1,5 +1,8 @@
 {
-	"whitelist": [
+	"defaultAction": "SCMP_ACT_KILL_PROCESS",
+	"syscalls": [
+		{
+			"names": [
 				"accept",
 				"accept4",
 				"access",
@@ -77,5 +80,7 @@
 				"write",
 				"writev"
 			],
-	"policy": 1
+			"action": "SCMP_ACT_ALLOW"
+		}
+	]
 }