Claude review: hid: Pen battery quirk for Surface Pro 12in

[Claude Code Review Bot <claude-review@example.com>]

Patch Review

Adds `HID_BATTERY_QUIRK_IGNORE` for the Elan touchscreen controller on this device:

```c
+#define I2C_DEVICE_ID_SURFACE_PRO_12IN  0x4376
```

```c
+	{ HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_SURFACE_PRO_12IN),
+	  HID_BATTERY_QUIRK_IGNORE },
```

The commit message explains the pen reports battery over Bluetooth, not I2C, so querying the I2C device for battery either shows a phantom battery or causes hangs. Using `HID_BATTERY_QUIRK_IGNORE` (not `AVOID_QUERY` like the Trogdor entry above it) is appropriate since the battery shouldn't be reported at all from this path.

Already Acked-by Jiri Kosina.

**Minor nit:** The `#define` uses two spaces before `0x4376` — other defines in hid-ids.h typically use a tab. This is cosmetic and likely fine.

**No functional issues.**

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