fix(display): add serial VCOM inversion for Nice! View (#3294)

Adds serial VCOM inversion command settings for the Nice! View
shield, which fixes the DC biased state the LCD was previously
in when using this shield

app/boards/shields/nice_view/nice_view.overlay

@@ -12,6 +12,8 @@
         reg = <0>;
         width = <160>;
         height = <68>;
+        serial-vcom-inversion;
+        serial-vcom-interval = <33>;
     };
 };