Adds raspberry pi firmware update tool rpi-update (#150)

* Adds 'Dein' vim plugin manager support

* Add missing comma

* Adds rpi-update command

README.md

@@ -103,6 +103,7 @@ Just run `topgrade`. It will run the following steps:
 * **Linux**: Update snap packages
 * **Linux**: Run [fwupdmgr](https://github.com/hughsie/fwupd) to show firmware upgrade. (View
   only. No upgrades will actually be performed)
+* **Linux**: Run `rpi-update` to update Raspberry Pi Firmware
 * Run custom defined commands
 * Final stage
   * **Linux**: Run [needrestart](https://github.com/liske/needrestart)

src/main.rs

@@ -372,6 +372,12 @@ fn run() -> Result<(), Error> {
 
     #[cfg(target_os = "linux")]
     {
+        execute(
+            &mut report,
+            "rpi-update",
+            || linux::run_rpi_update(sudo.as_ref(), run_type),
+            config.no_retry(),
+        )?;
         execute(
             &mut report,
             "Firmware upgrades",

src/steps/os/linux.rs

@@ -300,6 +300,16 @@ pub fn run_snap(sudo: Option<&PathBuf>, run_type: RunType) -> Result<(), Error>
     run_type.execute(sudo).arg(snap).arg("refresh").check_run()
 }
 
+#[must_use]
+pub fn run_rpi_update(sudo: Option<&PathBuf>, run_type: RunType) -> Result<(), Error> {
+    let sudo = require_option(sudo)?;
+    let rpi_update = require("rpi-update")?;
+
+    print_separator("rpi-update");
+
+    run_type.execute(sudo).arg(rpi_update).check_run()
+}
+
 #[must_use]
 pub fn run_etc_update(sudo: Option<&PathBuf>, run_type: RunType) -> Result<(), Error> {
     let sudo = require_option(sudo)?;