dt-bindings: timer: renesas, cmt: Document r8a774[35] CMT support

Document SoC specific compatible strings for r8a7743 and r8a7745.
No driver change is needed as the fallback strings will activate
the right code.

Signed-off-by: Fabrizio Castro <[e-mail]>
Reviewed-by: Biju Das <[e-mail]>
Reviewed-by: Geert Uytterhoeven <[e-mail]>
Reviewed-by: Rob Herring <[e-mail]>
Acked-by: Daniel Lezcano <[e-mail]>
Signed-off-by: Simon Horman <[e-mail]>

Documentation/devicetree/bindings/timer/renesas,cmt.txt

···
 
     - "renesas,r8a73a4-cmt0" for the 32-bit CMT0 device included in r8a73a4.
     - "renesas,r8a73a4-cmt1" for the 48-bit CMT1 device included in r8a73a4.
+    - "renesas,r8a7743-cmt0" for the 32-bit CMT0 device included in r8a7743.
+    - "renesas,r8a7743-cmt1" for the 48-bit CMT1 device included in r8a7743.
+    - "renesas,r8a7745-cmt0" for the 32-bit CMT0 device included in r8a7745.
+    - "renesas,r8a7745-cmt1" for the 48-bit CMT1 device included in r8a7745.
     - "renesas,r8a7790-cmt0" for the 32-bit CMT0 device included in r8a7790.
     - "renesas,r8a7790-cmt1" for the 48-bit CMT1 device included in r8a7790.
     - "renesas,r8a7791-cmt0" for the 32-bit CMT0 device included in r8a7791.
···
     - "renesas,r8a7794-cmt0" for the 32-bit CMT0 device included in r8a7794.
     - "renesas,r8a7794-cmt1" for the 48-bit CMT1 device included in r8a7794.
 
-    - "renesas,rcar-gen2-cmt0" for 32-bit CMT0 devices included in R-Car Gen2.
-    - "renesas,rcar-gen2-cmt1" for 48-bit CMT1 devices included in R-Car Gen2.
-		These are fallbacks for r8a73a4 and all the R-Car Gen2
-		entries	listed above.
+    - "renesas,rcar-gen2-cmt0" for 32-bit CMT0 devices included in R-Car Gen2
+		and RZ/G1.
+    - "renesas,rcar-gen2-cmt1" for 48-bit CMT1 devices included in R-Car Gen2
+		and RZ/G1.
+		These are fallbacks for r8a73a4, R-Car Gen2 and RZ/G1 entries
+		listed above.
 
   - reg: base address and length of the registers block for the timer module.
   - interrupts: interrupt-specifier for the timer, one per channel.