Added LAN8670_Read_PHY_ID1() and LAN8670_Read_Model_Number() to LAN8670 PHY Driver

[bjackson312006]

Added LAN8670_Read_PHY_ID1() and LAN8670_Read_Model_Number() to the LAN8670 PHY driver. These functions should be helpful for debugging, since these register fields have known values.

[Copilot]

Pull request overview

This pull request adds two new debugging helper functions to the LAN8670 PHY driver that read hardware identification registers with known values, making it easier to verify proper communication with the device.

Changes:

• Added LAN8670_Read_PHY_ID1() to read the 16-bit PHY Identifier 1 register containing the first half of the OUI (expected value: 0x0007)
• Added LAN8670_Read_Model_Number() to read the 6-bit model number field from the PHY Identifier 2 register (expected value: 0x16 for LAN8670)

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
general/src/lan8670.c	Implements the two new register read functions with proper error handling following established patterns
general/include/lan8670.h	Declares the new functions with Doxygen documentation describing their purpose and expected values

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[caiodasilva2005]

I will figure out why clang format is failing