dt-bindings: soc: ti: pruss: Re-arrange "compatible" in alphabetic order

Re-arrange "compatible" string in alphabetic order to decrease the
chance of conflicts.

Signed-off-by: Kishon Vijay Abraham I <[e-mail]>
Signed-off-by: Nishanth Menon <[e-mail]>
Acked-by: Krzysztof Kozlowski <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

Documentation/devicetree/bindings/soc/ti/ti,pruss.yaml

···
       - ti,am4376-pruss0 # for AM437x SoC family and PRUSS unit 0
       - ti,am4376-pruss1 # for AM437x SoC family and PRUSS unit 1
       - ti,am5728-pruss  # for AM57xx SoC family
-      - ti,k2g-pruss     # for 66AK2G SoC family
+      - ti,am642-icssg   # for K3 AM64x SoC family
       - ti,am654-icssg   # for K3 AM65x SoC family
       - ti,j721e-icssg   # for K3 J721E SoC family
-      - ti,am642-icssg   # for K3 AM64x SoC family
+      - ti,k2g-pruss     # for 66AK2G SoC family
 
   reg:
     maxItems: 1