[*] update sysc csr module by moving registers read/write actions out of the main state machine
[*] update sysc csr module by moving registers read/write actions out of the main state machine

sergeykhbr/riscv_vhdl,sergeykhbr/riscv_vhdl,sergeykhbr/riscv_vhdl,sergeykhbr/riscv_vhdl