video: logo: Drop full path of the input filename in generated file

Avoid this Yocto build warning to make build reproducible:

    WARNING: linux-foo-6.8-r0 do_package_qa: QA Issue:
    File /usr/src/debug/linux-foo/6.8-r0/drivers/video/logo/logo_linux_clut224.c
    in package linux-foo-src contains reference to TMPDIR

Helge modified the patch to drop the whole line.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Helge Deller <deller@gmx.de>

drivers/video/logo/pnmtologo.c

@@ -235,8 +235,6 @@ static void write_header(void)
 	fputs("/*\n", out);
 	fputs(" *  DO NOT EDIT THIS FILE!\n", out);
 	fputs(" *\n", out);
-	fprintf(out, " *  It was automatically generated from %s\n", filename);
-	fputs(" *\n", out);
 	fprintf(out, " *  Linux logo %s\n", logoname);
 	fputs(" */\n\n", out);
 	fputs("#include <linux/linux_logo.h>\n\n", out);