* Add Via support for Percent Canoe
* Removed unnecessary flags from rules.mk
* Changes as per PR
* Added 2 additional empty layers (for a total of 4)
* Set a unique vendor id for all percent studio boards
* Set a unique product id for the canoe
* Fixed formatting, removed trailing comma
* Fixed PS/PT typo for vendor id
* Removed unnecessary variables
* Removed unnecessary slashes
* Fixed missing layer name
