spec: do not set devices cgroup when rootless

eBPF requires to be root in the init namespace.

Signed-off-by: Giuseppe Scrivano <giuseppe@scrivano.org>

pkg/spec/config_linux.go

@@ -173,15 +173,16 @@ func (c *CreateConfig) addPrivilegedDevices(g *generate.Generator) error {
 			newMounts = append(newMounts, devMnt)
 		}
 		g.Config.Mounts = append(newMounts, g.Config.Mounts...)
+		g.Config.Linux.Resources.Devices = nil
 	} else {
 		for _, d := range hostDevices {
 			g.AddDevice(Device(d))
 		}
+		// Add resources device - need to clear the existing one first.
+		g.Config.Linux.Resources.Devices = nil
+		g.AddLinuxResourcesDevice(true, "", nil, nil, "rwm")
 	}
 
-	// Add resources device - need to clear the existing one first.
-	g.Config.Linux.Resources.Devices = nil
-	g.AddLinuxResourcesDevice(true, "", nil, nil, "rwm")
 	return nil
 }