meta-mender-e31x: conf: Fix E310 SD card data partition size
meta-mender-e31x: conf: Fix E310 SD card data partition size

Total SD card size is 8GB:
- BOOT partition is 16 MB (by default)
- DATA partition is 4400 MB
- Remaining is divided between 2 ROOTFS partitions

Add mender features to ni-neon-mender machines. Building would require
them to be defined in conf/local.conf or conf/auto.conf.

Fixes 932de92 ("meta-neon/meta-mender-neon: Move to U-boot 2018.07")
Signed-off-by: Sugandha Gupta <d84b5530ef1fc2430e5b91666d65ccc4e6d6f16e@ettus.com>
Signed-off-by: Moritz Fischer <16c4312f096cb05ec900643fe7a5f22f7761ab4a@ettus.com>

EttusResearch/meta-ettus,EttusResearch/meta-ettus,EttusResearch/meta-ettus,EttusResearch/meta-ettus,EttusResearch/meta-ettus,EttusResearch/meta-ettus