tests: Add default DRAM class for riscv/x86 boot tests

These scripts can be quite useful for running quick boot tests. However,
having to specify the DRAM each time is laborious. A sensible default
has therefore been set.

Change-Id: I2714b479853f686246383411a46a98494ba617da
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/53848
Reviewed-by: Bobby Bruce <bbruce@ucdavis.edu>
Maintainer: Bobby Bruce <bbruce@ucdavis.edu>
Tested-by: kokoro <noreply+kokoro@google.com>
2 files changed