Test and Makefile Updates

Created by: jordancarlin

riscv-arch-test

• Update to newest version of riscv-arch-test submodule
• Update d_fma tests to use new format
• Add the new misalign1-cjalr and misalign1-cjr tests to the list of compressed tests to run

Test List (tests.vh and testbench.sv)

• Remove outdated tests from tests.vh (imperas tests and wally64covi) fixes #969 (closed)
• Update formatting and whitespace of tests.vh
• Remove deprecated testgen scripts and wally32i and wally64i tests
• Remove unused wally64d test

Test Generation (Makefiles)

• Update sim/Makefile and tests/riscof/Makefile for increased parallelism and robustness. They can now be run with make --jobs and compile all tests in less than 4 minutes on chips (compared to 15 before)
• Remove some deprecated functcov targets