arch/esp32: Fix nxstyle errors and reset partition.c

This commit fixes the style issues in the ESP32 boot image implementation:

- Reset esp32_partition.c to upstream master to fix extensive formatting issues
- Add minimal OTA_IMG_GET_OFFSET ioctl case with correct NuttX style
- esp32_boot_image.c and partition.h already fixed in previous commits

Signed-off-by: Aviral Garg <aviral.garg.2023@gmail.com>
Signed-off-by: aviralgarg05 <gargaviral99@gmail.com>

Author: aviralgarg05