clic support riscvdv initial commit

Created by: silabs-hfegran

Initial support for clic

Fixed wrong asm variable index in interrupt_test.c Added riscv-dv constraints to clic_default config Disabled direct csr comparison for mnxti, mscratchscw and mscratchcswl Disabled with fixme a_softwareinterrupts_mcausemode assertion Added clic random tests to regression lists, updated riscv-dv fork hash Cleanup clic development