backport "udf: Allocate name buffer in directory iterator on heap" to 5.15

[Hauke Mehrtens <hauke@xxxxxxxxxx>]

Hi,

I am running into this compile error in 5.15.171 in OpenWrt on 32 bit 
systems. This problem was introduced with kernel 5.15.169.
```
fs/udf/namei.c: In function 'udf_rename':
fs/udf/namei.c:878:1: error: the frame size of 1144 bytes is larger than 
1024 bytes [-Werror=frame-larger-than=]
  878 | }
      | ^
cc1: all warnings being treated as errors
make[2]: *** [scripts/Makefile.build:289: fs/udf/namei.o] Error 1
make[1]: *** [scripts/Makefile.build:552: fs/udf] Error 2
```

This is fixed by this upstream commit:
commit 0aba4860b0d0216a1a300484ff536171894d49d8
Author: Jan Kara <jack@xxxxxxx>
Date:   Tue Dec 20 12:38:45 2022 +0100

    udf: Allocate name buffer in directory iterator on heap


Please backport this patch to 5.15 too.
It was already backported to kernel 6.1.

Hauke