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

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>