kernel: fix missing cpu cache defines non-x86

* Regression introduced due to scheduler change
* Other other non-x86, non-ppc, and non-arm platforms
  need evalulated for this metric

headers/private/kernel/arch/arm/arch_cpu.h

@@ -5,11 +5,18 @@
 #ifndef _KERNEL_ARCH_ARM_CPU_H
 #define _KERNEL_ARCH_ARM_CPU_H
 
+
+#define CPU_MAX_CACHE_LEVEL 8
+#define CACHE_LINE_SIZE 64
+	// TODO: Could be 32-bits sometimes?
+
+
 #ifndef _ASSEMBLER
 
 #include <arch/arm/arch_thread_types.h>
 #include <kernel.h>
 
+
 /* raw exception frames */
 struct iframe {
 	uint32 spsr;

headers/private/kernel/arch/ppc/arch_cpu.h

@@ -10,6 +10,11 @@
 #include <kernel.h>
 
 
+#define CPU_MAX_CACHE_LEVEL	8
+#define CACHE_LINE_SIZE		128
+	// 128 Byte lines on PPC970
+
+
 struct iframe {
 	uint32 vector;
 	uint32 srr0;