arm/olimex-stm32-p407: Fix kmodule board profile

[acassis]

Summary

Just increase the ksram and usram to avoid compilation issue.

Impact

Fix kmodule build

Testing

Local building only

[xiaoxiang781216]

@crafcat7 please fix the compiler error from https://github.com/apache/nuttx/actions/runs/11800434109/job/32871462888?pr=14748:

mount/fs_automount.c: In function 'automount_initialize':
Error: mount/fs_automount.c:816:7: error: 'return' with no value, in function returning non-void [-Werror=return-type]
  816 |       return;
      |       ^~~~~~
```

[xiaoxiang781216]

let's ignore the known ci error and merge this patch directly.