[PATCH v3] Add support for XM25LU64C

[Ssunk]

Hi Michael,

Thanks for your review and my apologies for missing your earlier questions.  
Here is v4 of the patch, which addresses all open issues:

---

> *What is "Google AVL"?*

For clarity, "Google AVL" refers to the **Approved Vendor List** used by ChromiumOS to validate flash parts.  

---

> *The datasheet link gives a 404 here.*

The new and working datasheet link is:  
https://www.xmcwh.com/uploads/954/XM25LU64C_V1.5.pdf

---
> *does the flash support SFDP?*

Yes, I have verified that the chip does support SFDP.

Thanks again for your guidance.

Best regards,
Sun