Pass architecture into Benchmark_Driver to fix build-script -B

[tbkka]

Recent changes to integrate Apple Silicon support modified how Benchmark drivers are invoked. Specifically, the generated benchmarking program now includes the target architecture as part of the executable name.

This PR passes the target architecture information into Benchmark_Driver so that build-script -B will work again.

Related to: #32923

[tbkka]

@swift-ci Please benchmark

[tbkka]

@swift-ci Please smoke test

[tbkka]

@swift-ci Please benchmark

[tbkka]

@swift-ci Please benchmark

[swift-ci]

Performance: -O

Code size: -O

Performance: -Osize

Regression	OLD	NEW	DELTA	RATIO
ObjectiveCBridgeStubToNSDate2	550	620	+12.7%	0.89x (?)

Code size: -Osize

Performance: -Onone

Code size: -swiftlibs

How to read the data

The tables contain differences in performance which are larger than 8% and differences in code size which are larger than 1%.

If you see any unexpected regressions, you should consider fixing the
regressions before you merge the PR.

Noise: Sometimes the performance results (not code size!) contain false
alarms. Unexpected regressions which are marked with '(?)' are probably noise.
If you see regressions which you cannot explain you can try to run the
benchmarks again. If regressions still show up, please consult with the
performance team (@eeckstein).

Hardware Overview

  Model Name: Mac Pro
  Model Identifier: MacPro6,1
  Processor Name: 12-Core Intel Xeon E5
  Processor Speed: 2.7 GHz
  Number of Processors: 1
  Total Number of Cores: 12
  L2 Cache (per Core): 256 KB
  L3 Cache: 30 MB
  Memory: 64 GB