[DML] DML doesn't support depthwise_multiplier >1

[Christywl]

Test Env:
Chromium Version: nightly build 75.0.3739.0 (1a2331d)
Platform: Windows

Expected Result:
Tests should pass.

Actual Result:
DML doesn't support depthwise_multiplier >1:

[8520:3640:0529/092532.962:ERROR:compilation_delegate_dml.cc(735)] depthwise_multiplier 2 is not supported.
[8520:3640:0529/092532.962:ERROR:compilation_delegate_dml.cc(505)] Failed compiling model.

Emotion Analysis examples( SSD MobileNet v1/ SSD MobileNet v2/SSDLite MobileNet v2) don't work since this:

[8520:3640:0529/093359.157:ERROR:compilation_delegate_dml.cc(735)] depthwise_multiplier 32 is not supported.
[8520:3640:0529/093359.157:ERROR:compilation_delegate_dml.cc(505)] Failed compiling model.

How to Reproduce:

1. Launch chromium with chrome.exe --use-dml

2. Visit

   • https://brucedai.github.io/webnnt/test/issue_depthwise_3.html?prefer=sustained
   • https://brucedai.github.io/webnnt/test/issue_atrous_depthwise_1.html?prefer=sustained