find7a: init: Add directory creation for GPS

Change-Id: I2bda7ca5c229fe8654a4044632c16091dab07eb1
init: Change sdcard emulation mode

WHAT THE HECK?  Why does this device have split storage
where the internal sdcard is formatted ext4?

If you're going finally kill UMS (ext4 will do it), WHY
use split storage?

Also add sdcard permissions fixup script.

Change-Id: I39542aabf44b2653588859a48d7ae4e5bc88a461
find7a: update audio_policy.conf

bring in-line with stock