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19450: cpu/esp32: fix compilation issues with GCC 12.2 r=benpicco a=gschorcht
### Contribution description
This PR provides the changes in `cpu/esp32` and `cpu/esp_common` to fix the compilation issues with GCC v12.2. It is required as the first step in the preparation of the upgrade to ESP-IDF version 5.1.
**Please note**: Insead of fixing the ESP-IDF 4.4 code itself by a big bunch of patches to fix the compilation problems with GCC v12.2, it temporarily disables some warnings. The reason is that the ESP-IDF 5.1 requires GCC v12.2 and should be fixed for this compiler version by the vendor.
### Testing procedure
Green CI
The change were already tested with all ESP-specific modules like `esp_now`, `esp_wifi`, `esp_spi` and `esp_ble` for all supported ESP platforms.
### Issues/PRs references
Prerequisite for https://github.com/RIOT-OS/riotdocker/pull/227
Fixes issue #19421
19476: native/syscalls: rename real_clock_gettime to clock_gettime r=benpicco a=Teufelchen1
### Contribution description
When compiling RIOT for native using a recent LLVM and enabling ASAN, one might encounter "Duplicated symbol".
This is due to a name clash with `real_clock_gettime()` in compiler-rt from [LLVM](f50246da65), I renamed RIOTs `real_clock_gettime` and just default to the posix function `clock_gettime`. The wrapper existed, most likely, for consistency only.
(The best solution would probably to convince the LLVM folks to declare their symbol as `static` and refactor a bit)
### Testing procedure
Passing CI should be enough.
Co-authored-by: Gunar Schorcht <gunar@schorcht.net>
Co-authored-by: Teufelchen1 <bennet.blischke@haw-hamburg.de>