Core v verif multi, update Riviera-PRO makefile

Created by: dawidzim

Hey! In this PR I update makefile for Riviera-PRO due issue #461 (closed).

make test SIMULATOR=riviera TEST=hello-world

works

$ make corev-dv CV_CORE=cv32e40p SIMULATOR=riviera
$ make gen_corev-dv test TEST=corev_rand_interrupt SIMULATOR=riviera

works, also I check

make compliance_regression RISCV_ISA=rv32imc

and works too