gpu-compute: Initialize GPUDriver member variables before use

A few member variables weren't initialized, but we were assuming that
they were 0 when first read. This explicitly sets those variables to 0.

Change-Id: I2c840d361ed3a7d306e22dc7561a3870f1ef94a1
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/46248
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Matt Sinclair <mattdsinclair@gmail.com>
Maintainer: Matt Sinclair <mattdsinclair@gmail.com>
1 file changed