tools headers UAPI: Sync linux/kvm.h with the kernel sources

To pick the changes in:

  b0305c1 ("KVM: x86/xen: Add KVM_XEN_INVALID_GPA and KVM_XEN_INVALID_GFN to uapi")

That just rebuilds perf, as these patches don't add any new KVM ioctl to
be harvested for the the 'perf trace' ioctl syscall argument
beautifiers.

This silences this perf build warning:

  Warning: Kernel ABI header at 'tools/include/uapi/linux/kvm.h' differs from latest version at 'include/uapi/linux/kvm.h'
  diff -u tools/include/uapi/linux/kvm.h include/uapi/linux/kvm.h

Cc: Adrian Hunter <[email protected]>
Cc: David Woodhouse <[email protected]>
Cc: Ian Rogers <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Paolo Bonzini <[email protected]>
Link: http://lore.kernel.org/lkml/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

Author: acmel

tools/include/uapi/linux/kvm.h

@@ -1767,6 +1767,7 @@ struct kvm_xen_hvm_attr {
 		__u8 runstate_update_flag;
 		struct {
 			__u64 gfn;
+#define KVM_XEN_INVALID_GFN ((__u64)-1)
 		} shared_info;
 		struct {
 			__u32 send_port;
@@ -1798,6 +1799,7 @@ struct kvm_xen_hvm_attr {
 	} u;
 };
 
+
 /* Available with KVM_CAP_XEN_HVM / KVM_XEN_HVM_CONFIG_SHARED_INFO */
 #define KVM_XEN_ATTR_TYPE_LONG_MODE		0x0
 #define KVM_XEN_ATTR_TYPE_SHARED_INFO		0x1
@@ -1823,6 +1825,7 @@ struct kvm_xen_vcpu_attr {
 	__u16 pad[3];
 	union {
 		__u64 gpa;
+#define KVM_XEN_INVALID_GPA ((__u64)-1)
 		__u64 pad[8];
 		struct {
 			__u64 state;