Mateusz Szafoni

## Summary 1. x86_64: add ELF support add arch_elf64.c for x86_64, ported from sim/x86 Signed-off-by: p-szafonimateusz 2. arch/x86_64: add MMU interface add MMU api for x86_64 Signed-off-by: p-szafonimateusz 3. arch/intel64:...

[BUG] intel64 ostest broken

1

### Description / Steps to reproduce the issue 1. `intel64/nsh` crashes on `wdog_test` ``` dump_assert_info: Current Version: NuttX 12.11.0-RC0 f582d8efd00 Sep 30 2025 13:29:10 x86_64 dump_assert_info: Assertion failed wd_start(&test_wdog, delay,...