drivers: eeprom: add emulated eeprom in flash

Modifications to incorporate latest write to new flash area
Modification to avoid writing garbage to new flash area when compactor
is called during init.
Modifications to allow erase at partition size instead of eeprom
pagesize.
Modifications to better separate rambuf usage from flash usage.
Corrected some errors in compactor

Signed-off-by: Laczen JMS <laczenjms@gmail.com>