dt-bindings: media: mtk-vcodec-encoder: fix non-vp8 clock name

Looking at the binding it makes sense that the `-vp8` compatible has
the `venc_lt_sel` while the other bindings have the `venc_sel` as name for
the clock.
This was also mentioned in the txt version of the binding before the
conversion:
 `
 clock-names: avc encoder must contain "venc_sel", vp8 encoder must
 contain "venc_lt_sel", decoder must contain "vcodecpll", "univpll_d2",
 `

So it is easier to check for compatible that includes vp8, since that's
just one, to have the requirement for the clock name property as
`venc_lt_sel`, rather than for all the others, some of which are missing,
thus for them, the requirement is wrongly `venc_lt_sel`.

Reordered the if/then/else to match `-vp8` and have all the rest of
the compatibles using the other clock name (`venc_sel`).

Signed-off-by: Eugen Hristev <eugen.hristev@collabora.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20231228113245.174706-3-eugen.hristev@collabora.com
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>

Documentation/devicetree/bindings/media/mediatek,vcodec-encoder.yaml

@@ -109,10 +109,7 @@ allOf:
       properties:
         compatible:
           enum:
-            - mediatek,mt8173-vcodec-enc
-            - mediatek,mt8188-vcodec-enc
-            - mediatek,mt8192-vcodec-enc
-            - mediatek,mt8195-vcodec-enc
+            - mediatek,mt8173-vcodec-enc-vp8
 
     then:
       properties:
@@ -122,8 +119,8 @@ allOf:
             maxItems: 1
         clock-names:
           items:
-            - const: venc_sel
-    else:  # for vp8 hw encoder
+            - const: venc_lt_sel
+    else:
       properties:
         clock:
           items:
@@ -131,7 +128,7 @@ allOf:
             maxItems: 1
         clock-names:
           items:
-            - const: venc_lt_sel
+            - const: venc_sel
 
 additionalProperties: false