driver/bareboxdriver: make name argument in boot() optional

Signed-off-by: Fabian Meuren <f.meuren@phytec.de>
[bst: split into dedicated commit]
Signed-off-by: Bastian Krause <bst@pengutronix.de>

Author: meuren

labgrid/driver/bareboxdriver.py

@@ -215,7 +215,7 @@ def await_boot(self):
         self.console.expect(self.bootstring)
 
     @Driver.check_active
-    def boot(self, name: str):
+    def boot(self, name: str = ""):
         """Boot the default or a specific boot entry
 
         Args: