Roll SwiftShader from 3d7faaa40575 to 2b155acd6a90 (3 revisions)

https://swiftshader.googlesource.com/SwiftShader.git/+log/3d7faaa40575..2b155acd6a90

2022-10-05 capn@google.com Remove Unicode handling from Subzero
2022-10-05 capn@google.com Use local XCB header copies
2022-10-05 capn@google.com Use local Wayland header copies

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 kainino@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: kainino@google.com
Change-Id: I60d2d6446378488c426c46c0cba62fbb23f4e502
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/104780
Bot-Commit: Dawn Autoroller <dawn-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: Dawn Autoroller <dawn-autoroll@skia-public.iam.gserviceaccount.com>
Kokoro: Kokoro <noreply+kokoro@google.com>

DEPS

@@ -137,7 +137,7 @@ deps = {
   },
 
   'third_party/swiftshader': {
-    'url': '{swiftshader_git}/SwiftShader@3d7faaa40575bd5d4d9ac81475fefb06cadd0029',
+    'url': '{swiftshader_git}/SwiftShader@2b155acd6a90b51009c60d397969fbad7ca771b5',
     'condition': 'dawn_standalone',
   },