ARM: shmobile: r8a7742: Basic SoC support

Add minimal support for the RZ/G1H (R8A7742) SoC.

Signed-off-by: Lad Prabhakar <[e-mail]>
Reviewed-by: Marian-Cristian Rotariu <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Geert Uytterhoeven <[e-mail]>

arch/arm/mach-shmobile/setup-rcar-gen2.c

···
 #include "rcar-gen2.h"
 
 static const struct of_device_id cpg_matches[] __initconst = {
+	{ .compatible = "renesas,r8a7742-cpg-mssr", .data = "extal" },
 	{ .compatible = "renesas,r8a7743-cpg-mssr", .data = "extal" },
 	{ .compatible = "renesas,r8a7744-cpg-mssr", .data = "extal" },
 	{ .compatible = "renesas,r8a7790-cpg-mssr", .data = "extal" },
···
 MACHINE_END
 
 static const char * const rz_g1_boards_compat_dt[] __initconst = {
+	"renesas,r8a7742",
 	"renesas,r8a7743",
 	"renesas,r8a7744",
 	"renesas,r8a7745",