ARM: zynq: Setup stack size via Kconfig

Stack size has been introduced by commit a69814c815b9 ("arm64: zynqmp:
Set initrd_high to as high as possible") and commit 085201c246ee ("arm64:
versal: Set initrd_high to as high as possible")
to support setting up initrd_high as high as possible.
The same change should happen for Zynq because the code is moved to xilinx
common location.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 1bcf345..8e67e1c 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -475,7 +475,7 @@
 
 config SET_STACK_SIZE
 	bool "Enable an option to set max stack size that can be used"
-	default y if ARCH_VERSAL || ARCH_ZYNQMP
+	default y if ARCH_VERSAL || ARCH_ZYNQMP || ARCH_ZYNQ
 	help
 	  This will enable an option to set max stack size that can be
 	  used by U-Boot.
@@ -484,6 +484,7 @@
 	hex "Define max stack size that can be used by U-Boot"
 	depends on SET_STACK_SIZE
 	default 0x4000000 if ARCH_VERSAL || ARCH_ZYNQMP
+	default 0x1000000 if ARCH_ZYNQ
 	help
 	  Define Max stack size that can be used by U-Boot so that the
 	  initrd_high will be calculated as base stack pointer minus this