Apply #pragma once, misc cleanup (#12322)

* Apply #pragma once in headers
* Adjust some thermistors formatting
* Misc cleanup and formatting

buildroot/share/fonts/getline.h

@@ -1,6 +1,5 @@
-
 #ifndef MYGETLINE_H
-#define MYGETLINE_H 1
+#define MYGETLINE_H
 
 //#include "config.h"