arm64: dts: apple Correct M3 MacBook Air board numbers

The board numbers listed in t8122-jxxx.dtsi (J513, J515)
were used internally for M3 MacBook Air prototypes and
appear in leaks [0], however, no released product seems
to exist with them, with the M3 MacBook Air line instead
using J613 and J615 [1][2]. Thus, correct these numbers.

[0] https://9to5mac.com/2023/04/10/15-inch-macbook-air-panel
-production-reportedly-ramping-up-ahead-of-upcoming-launch/
[1] https://en.wikipedia.org/wiki/List_of_Apple_codenames
[2] My own personal testing on my 13-inch M3 MacBook Air

Signed-off-by: Michael Reeves <[email protected]>

Author: IntegralPilot

arch/arm64/boot/dts/apple/t8122-jxxx.dtsi

@@ -4,7 +4,7 @@
  *
  * This file contains parts common to all Apple M3 devices using the t8122.
  *
- * target-type: J433, J434, J504, J513, J515
+ * target-type: J433, J434, J504, J613, J615
  *
  * Copyright The Asahi Linux Contributors
  */