Support non-linear mappings of flash chips

configname: CONFIG_MTD_COMPLEX_MAPPINGS

Linux Kernel Configuration
└─>Device Drivers
└─>Memory Technology Device (MTD) support
└─>Mapping drivers for chip access
└─>Support non-linear mappings of flash chips
In linux kernel since version 2.6.20 (release Date: 2007-02-04)  
This causes the chip drivers to allow for complicated
paged mappings of flash chips.