KVM: x86 emulator: allow repeat macro arguments to contain commas

Needed for repeating instructions with execution functions.
Signed-off-by: NAvi Kivity <avi@redhat.com>
Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>

arch/x86/kvm/emulate.c

@@ -94,14 +94,14 @@
 #define Src2One     (3<<29)
 #define Src2Mask    (7<<29)
 
-#define X2(x) x, x
-#define X3(x) X2(x), x
-#define X4(x) X2(x), X2(x)
-#define X5(x) X4(x), x
-#define X6(x) X4(x), X2(x)
-#define X7(x) X4(x), X3(x)
-#define X8(x) X4(x), X4(x)
-#define X16(x) X8(x), X8(x)
+#define X2(x...) x, x
+#define X3(x...) X2(x), x
+#define X4(x...) X2(x), X2(x)
+#define X5(x...) X4(x), x
+#define X6(x...) X4(x), X2(x)
+#define X7(x...) X4(x), X3(x)
+#define X8(x...) X4(x), X4(x)
+#define X16(x...) X8(x), X8(x)
 
 struct opcode {
 	u32 flags;