add the user_defines.v gpio defaults to the default includes to enable much faster simulation / testing

[mattvenn]

Normally a simulation will need to setup the gpio defaults, which takes a few hundred ms of simulation time (a few minutes of wallclock time). With the gpio defaults included, the simulation doesn't need to wait for the firmware to setup the gpios and can start the test immediately.

caravel_user_project/verilog/includes/includes.rtl.caravel_user_project

Line 16 in d9ddc78

# Caravel user project includes