soc: nxp: soc.yml: remove unsupported cpu clusters for imx8 socs

Some imx8 socs have cpu cluster entries for cores that
are not currently supported. Remove them.

Fixes #79027.

Signed-off-by: Laurentiu Mihalcea <[email protected]>

Author: LaurentiuM1234

soc/nxp/imx/soc.yml

@@ -6,23 +6,16 @@ family:
     - name: mimx8qm6
       cpuclusters:
       - name: adsp
-      - name: a72
-      - name: a53
-      - name: m4
   - name: imx8x
     socs:
     - name: mimx8qx6
       cpuclusters:
       - name: adsp
-      - name: a35
-      - name: m4
   - name: imx8ulp
     socs:
     - name: mimx8ud7
       cpuclusters:
       - name: adsp
-      - name: f1_dsp
-      - name: a35
   - name: imx8m
     socs:
     - name: mimx8ml8
@@ -37,10 +30,8 @@ family:
     - name: mimx8mn6
       cpuclusters:
       - name: a53
-      - name: m7
     - name: mimx8mq6
       cpuclusters:
-      - name: a53
       - name: m4
   - name: imx9
     socs: