dt-bindings: spi: sh-msiof: Add r8a7744 support

Document RZ/G1N (R8A7744) SoC bindings.
Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Chris Paterson <Chris.Paterson2@renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Mark Brown <broonie@kernel.org>

Documentation/devicetree/bindings/spi/sh-msiof.txt

@@ -2,6 +2,7 @@ Renesas MSIOF spi controller
 
 Required properties:
 - compatible           : "renesas,msiof-r8a7743" (RZ/G1M)
+			 "renesas,msiof-r8a7744" (RZ/G1N)
 			 "renesas,msiof-r8a7745" (RZ/G1E)
 			 "renesas,msiof-r8a774a1" (RZ/G2M)
 			 "renesas,msiof-r8a7790" (R-Car H2)