mem-ruby: fix build with PROTOCOL=MOESI_hammer
mem-ruby: fix build with PROTOCOL=MOESI_hammer

Was failing with:

Error: Unrecognized variable: l1i_victim_addr

since: I2c43f22aba5af3a57e54b1c435e5d3fbba86d1d5

Change-Id: I7df666acb724ee541804dd7557753a9ba4005516
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/20261
Reviewed-by: Anthony Gutierrez <fe4627c83134668039628e34eb0e4dda45a5da5e@amd.com>
Reviewed-by: Pouya Fotouhi <9a4e96653dd486df1de78005e58d9eefddcd9171@ucdavis.edu>
Maintainer: Anthony Gutierrez <fe4627c83134668039628e34eb0e4dda45a5da5e@amd.com>
Tested-by: kokoro <2ac7b1f3fa578934c95181d4272be0d3bca00121@google.com>

gem5/gem5,gem5/gem5,gem5/gem5,gem5/gem5,gem5/gem5,gem5/gem5,gem5/gem5