scripts: gen_cfb_font_header: remove guard and make font data private

The output of this script is intended to be put into an implementation
file, where the font data is accessed by index to an array maintained by
the linker script.  There is no need for protection against multiple
includes, and the font data array should not be a global symbol.

Signed-off-by: Peter A. Bigot <pab@pabigot.com>

scripts/gen_cfb_font_header.py

@@ -65,8 +65,6 @@ def extract_image_glyphs():
 
 def generate_header():
     """Generate CFB font header file"""
-    guard = "__CFB_FONT_{:s}_{:d}{:d}_H__".format(args.name.upper(), args.width,
-                                                  args.height)
 
     zephyr_base = os.environ.get('ZEPHYR_BASE', "")
 
@@ -89,15 +87,11 @@ def generate_header():
  *
  */
 
-#ifndef {guard}
-#define {guard}
-
 #include <zephyr.h>
 #include <display/cfb.h>
 
-const u8_t cfb_font_{name:s}_{width:d}{height:d}[{elem:d}][{b:.0f}] = {{\n"""
+static const u8_t cfb_font_{name:s}_{width:d}{height:d}[{elem:d}][{b:.0f}] = {{\n"""
                       .format(cmd=" ".join(clean_cmd),
-                              guard=guard,
                               name=args.name,
                               width=args.width,
                               height=args.height,
@@ -124,10 +118,8 @@ def generate_header():
 		  {first},
 		  {last}
 );
-
-#endif /* {guard} */""" .format(name=args.name, width=args.width,
-                                height=args.height, first=args.first,
-                                last=args.last, guard=guard))
+""" .format(name=args.name, width=args.width, height=args.height,
+            first=args.first, last=args.last))
 
 def parse_args():
     """Parse arguments"""