rc: fix missing --rc flags

In this commit we accidentally removed the global --rc flags.

0df7466d2b cmd/rcd: Fix command docs to include command specific prefix (#6675)

This re-instates them.

cmd/help.go

@@ -13,6 +13,7 @@ import (
 	"github.com/rclone/rclone/fs/config/configflags"
 	"github.com/rclone/rclone/fs/filter/filterflags"
 	"github.com/rclone/rclone/fs/log/logflags"
+	"github.com/rclone/rclone/fs/rc/rcflags"
 	"github.com/rclone/rclone/lib/atexit"
 	"github.com/spf13/cobra"
 	"github.com/spf13/pflag"
@@ -173,6 +174,7 @@ func setupRootCommand(rootCmd *cobra.Command) {
 	// Add global flags
 	configflags.AddFlags(ci, pflag.CommandLine)
 	filterflags.AddFlags(pflag.CommandLine)
+	rcflags.AddFlags(pflag.CommandLine)
 	logflags.AddFlags(pflag.CommandLine)
 
 	Root.Run = runRoot

cmd/rcd/rcd.go

@@ -15,11 +15,7 @@ import (
 	"github.com/spf13/cobra"
 )
 
-// flagPrefix is the prefix used to uniquely identify command line flags.
-const flagPrefix = "rc-"
-
 func init() {
-	rcflags.AddFlags(cmd.Root.Flags(), flagPrefix)
 	cmd.Root.AddCommand(commandDefinition)
 }
 
@@ -36,7 +32,7 @@ for GET requests on the URL passed in.  It will also open the URL in
 the browser when rclone is run.
 
 See the [rc documentation](/rc/) for more info on the rc flags.
-` + libhttp.Help(flagPrefix) + libhttp.TemplateHelp(flagPrefix) + libhttp.AuthHelp(flagPrefix),
+` + libhttp.Help(rcflags.FlagPrefix) + libhttp.TemplateHelp(rcflags.FlagPrefix) + libhttp.AuthHelp(rcflags.FlagPrefix),
 	Annotations: map[string]string{
 		"versionIntroduced": "v1.45",
 	},