Performance Counters Fix

Created by: OttG

Performance counter fix

• Fixed the for loop exit condition, now both commit ports are properly tracked;
• Added JALR to calls counter and modified the typo for the second destination register from x1 to x5 (AFAIK it can be used as alternate register to store the return address);
• For returns from call we only check if the instruction is a JALR and the destination register is x0.

Signed-off-by: Gianmarco Ottavi gianmarco@openhwgroup.org