platform: support: update m2 devicetree inclusions

The devicetrees were all merged for 6.18:
J415:
commit 273be31e5afd ("arm64: dts: apple: Add devicetreee for t8112-j415")

J474s, J475c, J475d:
commit 9da45d978ccb (arm64: dts: apple: Add J474s, J475c and J475d device trees)

J414s, J414cm J416s, J416c:
commit 44a952585b4b ("arm64: dts: apple: Add J414 and J416 Macbook Pro device trees")

J180d:
commit 637f7d2c731f ("arm64: dts: apple: Add J180d (Mac Pro, M2 Ultra, 2023) device tree")

Signed-off-by: Axel Flordal <axel@flordal.net>

Author: AxelFl

docs/platform/feature-support/m2.md

@@ -63,7 +63,7 @@ These are features/hardware blocks that are present on all devices with the give
 |                    | MacBook Air<br>(13-inch, 2022) | MacBook Air<br>(15-inch, 2023) | MacBook Pro<br>(13-inch, 2022) | Mac Mini<br>(2023) |
 |--------------------|:------------------------------:|:------------------------------:|:------------------------------:|:------------------:|
 | Installer          | yes                            | yes                            | yes                            | yes                |
-| Devicetree         | 6.4                            | linux-asahi                    | 6.4                            | 6.4                |
+| Devicetree         | 6.4                            | 6.18                           | 6.4                            | 6.4                |
 | Main display       | linux-asahi                    | linux-asahi                    | linux-asahi                    | -                  |
 | Keyboard           | linux-asahi                    | linux-asahi                    | linux-asahi                    | -                  |
 | KB backlight       | 6.4                            | 6.4                            | 6.4                            | -                  |
@@ -88,7 +88,7 @@ These are features/hardware blocks that are present on all devices with the give
 |                    | Mac Mini<br>(2023) | MacBook Pro<br>(14/16-inch, 2023) | Mac Studio<br>(2023) | Mac Pro<br>(2023)    |
 |--------------------|:------------------:|:---------------------------------:|:--------------------:|:--------------------:|
 | Installer          | yes                | yes                               | yes                  | WIP                  |
-| Devicetree         | linux-asahi        | linux-asahi                       | linux-asahi          | linux-asahi          |
+| Devicetree         | 6.18               | 6.18                              | 6.18                 | 6.18                 |
 | Main display       | -                  | linux-asahi                       | -                    | -                    |
 | Keyboard           | -                  | linux-asahi                       | -                    | -                    |
 | KB backlight       | -                  | linux-asahi                       | -                    | -                    |