tree 128af8505d486e3176d8f603ad4f6c95aa61bcaa
parent 74db157b9406594a549a70415668dd6cbe17d1d3
author Ethan Yonker <dees_troy@teamw.in> 1450109820 -0600
committer Ethan Yonker <dees_troy@teamw.in> 1450535892 -0600

Use ioctl to get block device size

AMLogic based device uses paths like /dev/block/recovery and the
stock init binary either deletes or does not create mmcblk0p12
which breaks TWRP because TWRP cannot match up the path / name.
The ioctl method is probably more reliable anyway and certainly
should be faster.

Change-Id: I73f981dcec637cdf5b189bdefa00ea15b924b500