bundles/raspberrypi: fix config.txt for lcd display

bundles/raspberrypi/metadata.py

@@ -25,7 +25,6 @@ defaults = {
         },
     },
     'raspberrypi': {
-        'default-target': 'multi-user.target',
         'cmdline': {
             'console=tty1',
             'root=/dev/mmcblk0p2',
@@ -37,6 +36,8 @@ defaults = {
             'plymouth.ignore-serial-consoles',
             'net.ifnames=0',
         },
+        'default-target': 'multi-user.target',
+        'enable_display': False,
     },
     'systemd': {
         'journal': {
@@ -46,3 +47,19 @@ defaults = {
         },
     },
 }
+
+
+@metadata_reactor.provides(
+    'raspberrypi/cmdline',
+)
+def display(metadata):
+    if not metadata.get('raspberrypi/enable_display'):
+        return {}
+
+    return {
+        'raspberrypi': {
+            'cmdline': {
+                'video=DSI-1:800x480@60,rotate=180',
+            },
+        },
+    }