Function otThreadGetVendorOui 

pub unsafe extern "C" fn otThreadGetVendorOui(
    aInstance: *mut otInstance,
) -> u32

Gets the vendor OUI-24.

@deprecated This function is deprecated. Use otThreadGetVendorOuiInfo() instead.

If the configured Vendor OUI has a prefix length greater than 24 bits, this function returns the most significant 24 bits (first 3 bytes) of the OUI to maintain backward compatibility.

@param[in] aInstance A pointer to an OpenThread instance.

@returns The vendor OUI-24 value, or OT_THREAD_UNSPECIFIED_VENDOR_OUI if not specified.