Fix depmod issue found in rust-next (2)

We can also take out this one.

Reported-by: Heiko Carstens <[email protected]>
Reported-by: Daniel Axtens <[email protected]>
Signed-off-by: Miguel Ojeda <[email protected]>

Author: ojeda

scripts/mod/modpost.c

@@ -51,7 +51,7 @@ enum export {
  * here we use Elf_Addr instead of long for covering cross-compile
  */
 
-#define MODULE_NAME_LEN (256 - sizeof(Elf_Addr))
+#define MODULE_NAME_LEN (64 - sizeof(Elf_Addr))
 
 void __attribute__((format(printf, 2, 3)))
 modpost_log(enum loglevel loglevel, const char *fmt, ...)