anv: Update "do not edit" comments with proper filename

This does two things, first it updates both the .h and the .c file to
have the same do not edit string. Second, it uses __file__ to ensure
that even if the file is moved or renamed that the name will be correct.

One thing to note is the use of '{{' and '}}' in the C template. This is
to instruct python to print a literal '{' and '}' respectively, rather
than treating the contents as a formatter specifier.

v3: - add this patch

Signed-off-by: Dylan Baker <dylanx.c.baker@intel.com>

src/intel/vulkan/anv_entrypoints_gen.py

 #
 
 import argparse
+import os
 import textwrap
 import xml.etree.ElementTree as et
 
 
 
 def gen_header(entrypoints):
-    print "/* This file generated from vk_gen.py, don't edit directly. */\n"
+    print "/* This file generated from {}, don't edit directly. */\n".format(
+        os.path.basename(__file__))
 
     print "struct anv_dispatch_table {"
     print "   union {"
      * IN THE SOFTWARE.
      */
 
-    /* DO NOT EDIT! This is a generated file. */
+    /* This file generated from {}, don't edit directly. */
 
     #include "anv_private.h"
 
-    struct anv_entrypoint {
+    struct anv_entrypoint {{
        uint32_t name;
        uint32_t hash;
-    };
+    }};
 
     /* We use a big string constant to avoid lots of reloctions from the entry
      * point table to lots of little strings. The entries in the entry point table
      * store the index into this big string.
      */
 
-    static const char strings[] =""")
+    static const char strings[] =""".format(os.path.basename(__file__)))
 
     offsets = []
     i = 0