KVM: Portability: Move kvm_memory_alias to asm/kvm.h

This patch moves sturct kvm_memory_alias from include/linux/kvm.h
to include/asm-x86/kvm.h. Also have include/linux/kvm.h include
include/asm/kvm.h.
Signed-off-by: Jerone Young <jyoung5@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>

include/asm-x86/kvm.h

+#ifndef __LINUX_KVM_X86_H
+#define __LINUX_KVM_X86_H
+
+/*
+ * KVM x86 specific structures and definitions
+ *
+ */
+
+#include <asm/types.h>
+#include <linux/ioctl.h>
+
+struct kvm_memory_alias {
+	__u32 slot;  /* this has a different namespace than memory slots */
+	__u32 flags;
+	__u64 guest_phys_addr;
+	__u64 memory_size;
+	__u64 target_phys_addr;
+};
+
+#endif

include/linux/kvm.h

@@ -9,6 +9,7 @@
 
 #include <asm/types.h>
 #include <linux/ioctl.h>
+#include <asm/kvm.h>
 
 #define KVM_API_VERSION 12
 
@@ -35,13 +36,6 @@ struct kvm_userspace_memory_region {
 /* for kvm_memory_region::flags */
 #define KVM_MEM_LOG_DIRTY_PAGES  1UL
 
-struct kvm_memory_alias {
-	__u32 slot;  /* this has a different namespace than memory slots */
-	__u32 flags;
-	__u64 guest_phys_addr;
-	__u64 memory_size;
-	__u64 target_phys_addr;
-};
 
 /* for KVM_IRQ_LINE */
 struct kvm_irq_level {