linker: esp32: Add missing iterable sections

This fixes missing PPP iterable and adds all
common-rom.ld iterables.

ESP32 and esptool does not support more then 16 segments, which
blocks including common iterables section as is.

This partially reverts commit ad0bf94f

Signed-off-by: Sylvio Alves <sylvio.alves@espressif.com>