Add LG Gpad 8.3 (v500) to EV

The following repos need to be uploaded to Evervolv:

https://github.com/EV-staging/android_device_lge_v500
https://github.com/EV-staging/android_kernel_lge_v500

Change-Id: I882f74336b9dc6bb00d95c453fd51462d6112216