arm: rmobile: Add support R8A7790

Renesas R8A7790 is CPU with Cortex-A7 and A15.
This supports the basic register definition and GPIO and
framework of PFC.

Signed-off-by: Kouei Abe <kouei.abe.cp@renesas.com>
Signed-off-by: Ryo Kataoka <ryo.kataoka.wt@renesas.com>
Signed-off-by: Hisashi Nakamura <hisashi.nakamura.ak@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
CC: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
CC: Albert Aribaud <albert.u.boot@aribaud.net>
diff --git a/arch/arm/cpu/armv7/rmobile/cpu_info.c b/arch/arm/cpu/armv7/rmobile/cpu_info.c
index 07a33fb..6bd3c2e 100644
--- a/arch/arm/cpu/armv7/rmobile/cpu_info.c
+++ b/arch/arm/cpu/armv7/rmobile/cpu_info.c
@@ -58,6 +58,11 @@
 		       rmobile_get_cpu_rev_fraction());
 		break;
 
+	case 0x45:
+		printf("CPU: Renesas Electronics R8A7790 rev %d\n",
+		       rmobile_get_cpu_rev_integer());
+		break;
+
 	default:
 		printf("CPU: Renesas Electronics CPU rev %d.%d\n",
 		       rmobile_get_cpu_rev_integer(),