dt-bindings: phy: ti,phy-j721e-wiz: fix bindings for torrent phy

When WIZ wraps a Cadence Torrent PHY (instead of Cadence Sierra PHY)
there is a difference in the refclk-dig node: Torrent only has two
clocks instead of Sierra's four clocks. Add minItems: 2 to solve this.

Additionally, in our use case we only need to use assigned-clock for a
single clock, but the current binding requires either no assigned-clocks
or two. Fix this by adding minItems: 1 to all the assigned-clock
properties.

There was also an extra trailing whitespace, which this patch removes.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Link: https://lore.kernel.org/r/20200918083743.213874-2-tomi.valkeinen@ti.comSigned-off-by: Vinod Koul <vkoul@kernel.org>

Documentation/devicetree/bindings/phy/ti,phy-j721e-wiz.yaml

@@ -45,9 +45,15 @@ properties:
   ranges: true
 
   assigned-clocks:
+    minItems: 1
     maxItems: 2
 
   assigned-clock-parents:
+    minItems: 1
+    maxItems: 2
+
+  assigned-clock-rates:
+    minItems: 1
     maxItems: 2
 
   typec-dir-gpios:
@@ -119,9 +125,10 @@ patternProperties:
       logic.
     properties:
       clocks:
+        minItems: 2
         maxItems: 4
-        description: Phandle to four clock nodes representing the inputs to
-          refclk_dig
+        description: Phandle to two (Torrent) or four (Sierra) clock nodes representing
+          the inputs to refclk_dig
 
       "#clock-cells":
         const: 0