eth-ota: sync uploader result codes with firmware enum

The previous commit moved OTA_ERR_TIMEOUT from 0x06 to 0x08 to free
0x06 for OTA_ACK, but bin/eth-ota-upload.py still mapped 0x06 to
"Timeout" — so a real timeout from the device (0x08) was printed as
"Unknown result 0x08" instead of being identified.

Align the mapping with the full OTAResponse enum in ethOTA.cpp:
keep 0x00–0x03, remove the stale 0x06, and add 0x04 (magic),
0x05 (begin), 0x07 (auth), 0x08 (timeout) so every firmware response
prints a human-readable message.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: cvaldess

bin/eth-ota-upload.py

@@ -167,7 +167,10 @@ def upload_firmware(host: str, port: int, firmware: bytes, psk: bytes, timeout:
             0x01: "CRC mismatch",
             0x02: "Size error",
             0x03: "Write error",
-            0x06: "Timeout",
+            0x04: "Magic mismatch",
+            0x05: "Updater.begin() failed",
+            0x07: "Auth failed",
+            0x08: "Timeout",
         }
         code = result[0]
         msg = result_codes.get(code, f"Unknown result 0x{code:02X}")