ARM: dts: renesas: Add RZ/A1 platform code

Add platform code and DTs for Renesas RZ/A1 R7S72100 SoC.
Distinguishing feature of this SoC is that it has up to
10 MiB of on-SoC static RAM (SRAM).

The DTs are imported from Linux 5.0.11, commit d5a2675b207d .

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Chris Brandt <chris.brandt@renesas.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
diff --git a/arch/arm/mach-rmobile/cpu_info.c b/arch/arm/mach-rmobile/cpu_info.c
index aa5be52..b0686ed 100644
--- a/arch/arm/mach-rmobile/cpu_info.c
+++ b/arch/arm/mach-rmobile/cpu_info.c
@@ -26,6 +26,7 @@
 #endif
 
 #ifdef CONFIG_DISPLAY_CPUINFO
+#ifndef CONFIG_RZA1
 static u32 __rmobile_get_cpu_type(void)
 {
 	return 0x0;
@@ -105,4 +106,11 @@
 
 	return 0;
 }
+#else
+int print_cpuinfo(void)
+{
+	printf("CPU: Renesas Electronics RZ/A1\n");
+	return 0;
+}
+#endif
 #endif /* CONFIG_DISPLAY_CPUINFO */