rename -timeout flag to -vol-timeout

The "timeout" name clashes with the test flag of the same name.

Author: eliasnaur

main.go

@@ -1628,7 +1628,7 @@ func main() {
 	ocdCommandsString := flag.String("ocd-commands", "", "OpenOCD commands, overriding target spec (can specify multiple separated by commas)")
 	ocdOutput := flag.Bool("ocd-output", false, "print OCD daemon output during debug")
 	port := flag.String("port", "", "flash port (can specify multiple candidates separated by commas)")
-	timeout := flag.Duration("timeout", 20*time.Second, "the length of time to retry locating the MSD volume to be used for flashing")
+	timeout := flag.Duration("volume-timeout", 20*time.Second, "the length of time to retry locating the MSD volume to be used for flashing")
 	programmer := flag.String("programmer", "", "which hardware programmer to use")
 	ldflags := flag.String("ldflags", "", "Go link tool compatible ldflags")
 	llvmFeatures := flag.String("llvm-features", "", "comma separated LLVM features to enable")