RDSEED (R64) - Throughput and Uops

With 1 independent instruction

With unroll_count=10 and no inner loop

Code:
```
   0:	49 0f c7 f8          	rdseed r8
```
Show nanoBench command
Results:
- Instructions retired: 1.0
- Core cycles: 878.2
- Reference cycles: 627.13
- UOPS_EXECUTED.THREAD: 12.0
- RETIRE_SLOTS: 14.0
- UOPS_MITE: 0.0
- UOPS_MS: 14.0
- UOPS_PORT_0: 2.4
- UOPS_PORT_1: 3.1
- UOPS_PORT_2: 0.5
- UOPS_PORT_3: 0.5
- UOPS_PORT_4: 0.0
- UOPS_PORT_5: 1.8
- UOPS_PORT_6: 3.2
- UOPS_PORT_7: 0.0
- DIV_CYCLES: 0.0
- ILD_STALL.LCP: 0.0
- UOPS_MITE>=1: 0.0

With unroll_count=10, no inner loop, and 1 NOP

Code:

   0:	49 0f c7 f8          	rdseed r8
   4:	90                   	nop

Show nanoBench command
Results:
- Instructions retired: 2.0
- Core cycles: 883.37
- Reference cycles: 630.2
- UOPS_EXECUTED.THREAD: 12.0
- RETIRE_SLOTS: 15.0
- UOPS_MITE: 1.0
- UOPS_MS: 14.0
- UOPS_PORT_0: 2.3
- UOPS_PORT_1: 3.2
- UOPS_PORT_2: 0.5
- UOPS_PORT_3: 0.5
- UOPS_PORT_4: 0.0
- UOPS_PORT_5: 1.5
- UOPS_PORT_6: 3.5
- UOPS_PORT_7: 0.0
- DIV_CYCLES: 0.0
- ILD_STALL.LCP: 0.0
- UOPS_MITE>=1: 1.0

With loop_count=10 and unroll_count=1

Code:
```
   0:	49 0f c7 f8          	rdseed r8
```
Show nanoBench command
Results:
- Instructions retired: 3.0
- Core cycles: 881.2
- Reference cycles: 625.6
- UOPS_EXECUTED.THREAD: 13.0
- RETIRE_SLOTS: 16.6
- UOPS_MITE: 0.6
- UOPS_MS: 14.0
- UOPS_PORT_0: 2.47
- UOPS_PORT_1: 3.1
- UOPS_PORT_2: 0.5
- UOPS_PORT_3: 0.5
- UOPS_PORT_4: 0.0
- UOPS_PORT_5: 1.55
- UOPS_PORT_6: 4.5
- UOPS_PORT_7: 0.0
- DIV_CYCLES: 0.0
- ILD_STALL.LCP: 0.0
- UOPS_MITE>=1: 0.6