dt-bindings: arm: realview: Spelling s/ARM 11/Arm11/, s/Cortex A-/Cortex-A/

Fix misspellings of "Arm11", "Cortex-A8", and "Cortex-A9".

While at it, add a missing comma before "and", and reflow the paragraph.

Signed-off-by: Geert Uytterhoeven <[e-mail]>
Acked-by: Krzysztof Kozlowski <[e-mail]>
Signed-off-by: Linus Walleij <[e-mail]>

Documentation/devicetree/bindings/arm/arm,realview.yaml

···
   - Linus Walleij <[e-mail]>
 
 description: |+
-  The ARM RealView series of reference designs were built to explore the ARM
-  11, Cortex A-8 and Cortex A-9 CPUs. This included new features compared to
-  the earlier CPUs such as TrustZone and multicore (MPCore).
+  The ARM RealView series of reference designs were built to explore the Arm11,
+  Cortex-A8, and Cortex-A9 CPUs. This included new features compared to the
+  earlier CPUs such as TrustZone and multicore (MPCore).
 
 properties:
   $nodename: