…m port counter

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#### Why I did it
This PR is to set `sai_stats_support_mask` to `0x800` for Moby HWSKUs. This is a continuation of sonic-net#23772

##### Work item tracking
* Microsoft ADO **34515971**:
* CSP **CS00012419125**

#### How I did it
Update config.bcm

#### How to verify it
The change is verified by running PFCWD test on a physical testbed.

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#### Which release branch to backport (provide reason below if selected)

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- [ ] 202205
- [ ] 202211
- [ ] 202305
- [ ] 202311
- [ ] 202405
- [ ] 202411
- [x] 202505

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#### Description for the changelog
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Set `sai_stats_support_mask` to `0x800` for Moby HWSKUs.

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#### Link to config_db schema for YANG module changes
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