Roll SwiftShader from e733a26e2ba0 to 70f3a0ff7233 (3 revisions)

https://swiftshader.googlesource.com/SwiftShader.git/+log/e733a26e2ba0..70f3a0ff7233

2021-11-05 sugoi@google.com VK_EXT_blend_operation_advanced minimal implementation
2021-11-05 sugoi@google.com Support VK_EXT_pipeline_creation_cache_control
2021-11-05 capn@google.com Poison device memory allocations for GN MSan builds

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/swiftshader-angle-autoroll
Please CC cnorthrop@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 ANGLE: https://bugs.chromium.org/p/angleproject/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: cnorthrop@google.com
Change-Id: I2ab824e934ad1a08e9e743511f7374cada086486
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3264005
Bot-Commit: angle-autoroll <angle-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: angle-autoroll <angle-autoroll@skia-public.iam.gserviceaccount.com>

DEPS

@@ -496,7 +496,7 @@ deps = {
   },
 
   'third_party/SwiftShader': {
-    'url': '{swiftshader_git}/SwiftShader@e733a26e2ba04c8eb37aece51a81600a99e01612',
+    'url': '{swiftshader_git}/SwiftShader@70f3a0ff7233cfd677f818fffdabe3559a77cc89',
     'condition': 'not build_with_chromium',
   },