arm: Move MAX_CPUS to Kconfig

Move MAX_CPUS option to Kconfig and clean up existing uses for ARM. This
option is used by Freescale Layerscape SoCs.

Signed-off-by: York Sun <york.sun@nxp.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/arm/cpu/armv7/ls102xa/Kconfig b/arch/arm/cpu/armv7/ls102xa/Kconfig
index 2648416..e8264f5 100644
--- a/arch/arm/cpu/armv7/ls102xa/Kconfig
+++ b/arch/arm/cpu/armv7/ls102xa/Kconfig
@@ -9,6 +9,17 @@
 	bool "Deep sleep"
 	depends on ARCH_LS1021A
 
+config MAX_CPUS
+	int "Maximum number of CPUs permitted for LS102xA"
+	depends on ARCH_LS1021A
+	default 2
+	help
+	  Set this number to the maximum number of possible CPUs in the SoC.
+	  SoCs may have multiple clusters with each cluster may have multiple
+	  ports. If some ports are reserved but higher ports are used for
+	  cores, count the reserved ports. This will allocate enough memory
+	  in spin table to properly handle all cores.
+
 config SYS_FSL_ERRATUM_A010315
 	bool "Workaround for PCIe erratum A010315"