arm64: versal: Add support for new Xilinx Versal ACAPs

Xilinx is introducing Versal, an adaptive compute acceleration platform
(ACAP), built on 7nm FinFET process technology. Versal ACAPs combine
Scalar Processing Engines, Adaptable Hardware Engines, and Intelligent
Engines with leading-edge memory and interfacing technologies to deliver
powerful heterogeneous acceleration for any application. The Versal AI
Core series has five devices, offering 128 to 400 AI Engines. The series
includes dual-core Arm Cortex™-A72 application processors, dual-core Arm
Cortex-R5 real-time processors, 256KB of on-chip memory with ECC, more
than 1,900 DSP engines optimized for high-precision floating point with
low latency.

The patch is adding necessary infrastructure in place without enabling
platform which is done in separate patch.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index ccf2a84..3ba8efd 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -853,6 +853,14 @@
 	imply SPL_SERIAL_SUPPORT
 	imply USB_GADGET
 
+config ARCH_VERSAL
+	bool "Support Xilinx Versal Platform"
+	select ARM64
+	select CLK
+	select DM
+	select DM_SERIAL
+	select OF_CONTROL
+
 config ARCH_VF610
 	bool "Freescale Vybrid"
 	select CPU_V7A
@@ -1449,6 +1457,8 @@
 
 source "arch/arm/mach-zynq/Kconfig"
 
+source "arch/arm/mach-versal/Kconfig"
+
 source "arch/arm/mach-zynqmp-r5/Kconfig"
 
 source "arch/arm/cpu/armv7/Kconfig"