Add vintf for EDI collectors

EDI collectors like VintfDeviceInfo and VendorApexDeviceInfo need to
access to VINTF information. Instead of directly accessing related
files, we expose processed VINTF via /system/bin/vintf.

Bug: 336577802
Test: /system/bin/vintf
Change-Id: Id2b2e9b905bcb168638c60c2dc92ca550ed1558f