vis: update it, refactor Makefile and refresh patch due to fuzz

vis: update it, refactor Makefile and refresh patch due to fuzz

- Switch to AUTORELEASE in PKG_RELEASE
This avoids cases when someone forgets to bump PKG_RELEASE

- Fixed SPDX License Identifier

- Changed package versioning
Before: vis_1440-2_arm_cortex-a9_vfpv3-d16.ipk
After: vis_2013-04-07-7710cce4-1_arm_cortex-a9_vfpv3-d16.ipk

- Drop not necessary rows
(Some of them were overwritting defaults and it is not necessary)
Downloaded tarball is ~2kB smaller

Signed-off-by: Josef Schlehofer <pepe.schlehofer@gmail.com>