Roll SwiftShader from bca23447ad46 to 518c5780ac4f (7 revisions)

https://swiftshader.googlesource.com/SwiftShader.git/+log/bca23447ad46..518c5780ac4f

2022-01-27 sugoi@google.com Vulkan 1.3 API
2022-01-27 capn@google.com Add benchmarks for trigonometry and transcendental functions
2022-01-27 dvet@google.com Add affinity options to the configuration.
2022-01-27 capn@google.com Clarify the need to log into Gerrit
2022-01-27 sugoi@google.com Fix compilation error in new Vulkan headers
2022-01-27 capn@google.com Use rr::MulAdd() to implement GLSL.std.450's Fma instruction
2022-01-27 capn@google.com Implement MulAdd() which may perform FMA

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/swiftshader-dawn-autoroll
Please CC bajones@google.com on the revert to ensure that a human
is aware of the problem.

To file a bug in SwiftShader: https://bugs.chromium.org/p/swiftshader/issues/entry
To file a bug in Dawn: https://bugs.chromium.org/p/dawn/issues/entry

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md

Bug: None
Tbr: bajones@google.com
Change-Id: I37e99911510c0109e92b70f3ca59fb0797d3c17e
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/78500
Bot-Commit: Dawn Autoroller <dawn-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: Dawn Autoroller <dawn-autoroll@skia-public.iam.gserviceaccount.com>

DEPS

@@ -133,7 +133,7 @@ deps = {
   },
 
   'third_party/swiftshader': {
-    'url': '{swiftshader_git}/SwiftShader@bca23447ad4667a7b79973569ab5d8d905d211ac',
+    'url': '{swiftshader_git}/SwiftShader@518c5780ac4fdc4a7957e9bd2727a6cc4df54750',
     'condition': 'dawn_standalone',
   },