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: 13817.17
- Reference cycles: 8261.17
- UOPS_EXECUTED.THREAD: 81.2
- RETIRE_SLOTS: 65.2
- UOPS_MITE: 0.08
- UOPS_MS: 92.1
- UOPS_PORT_0: 7.9
- UOPS_PORT_1: 14.1
- UOPS_PORT_5: 12.9
- UOPS_PORT_6: 23.2
- UOPS_PORT_23: 1.0
- UOPS_PORT_49: 9.23
- UOPS_PORT_78: 12.23
- 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: 13813.77
- Reference cycles: 8257.52
- UOPS_EXECUTED.THREAD: 81.3
- RETIRE_SLOTS: 66.6
- UOPS_MITE: 0.87
- UOPS_MS: 92.1
- UOPS_PORT_0: 7.9
- UOPS_PORT_1: 14.1
- UOPS_PORT_5: 12.9
- UOPS_PORT_6: 23.18
- UOPS_PORT_23: 1.0
- UOPS_PORT_49: 9.38
- UOPS_PORT_78: 12.38
- DIV_CYCLES: 0.0
- ILD_STALL.LCP: 0.0
- UOPS_MITE>=1: 1.0

With loop_count=2 and unroll_count=1

Code:
```
   0:	49 0f c7 f8          	rdseed r8
```
Show nanoBench command
Results:
- Instructions retired: 3.0
- Core cycles: 13555.0
- Reference cycles: 8096.92
- UOPS_EXECUTED.THREAD: 82.25
- RETIRE_SLOTS: 65.67
- UOPS_MITE: -0.32
- UOPS_MS: 92.83
- UOPS_PORT_0: 7.5
- UOPS_PORT_1: 15.0
- UOPS_PORT_5: 12.0
- UOPS_PORT_6: 24.42
- UOPS_PORT_23: 1.0
- UOPS_PORT_49: 9.42
- UOPS_PORT_78: 12.42
- DIV_CYCLES: 0.0
- ILD_STALL.LCP: 0.0
- UOPS_MITE>=1: 1.0