Add new signedness attributes to RESCALE

Signed-off-by: Eric Kunze <eric.kunze@arm.com>
Change-Id: I96202b90bff833654735a2f2306eb782d202b6e6
diff --git a/src/tosa_serialization_handler.cpp b/src/tosa_serialization_handler.cpp
index ef4547a..7e96313 100644
--- a/src/tosa_serialization_handler.cpp
+++ b/src/tosa_serialization_handler.cpp
@@ -652,6 +652,16 @@
 #define DEF_ARGS_7(NAME, T0, F0, V0, T1, F1, V1, T2, F2, V2, T3, F3, V3, T4, F4, V4, T5, F5, V5, T6, F6, V6)           \
     DEF_ARGS_##F0(NAME, T0, V0) DEF_ARGS_##F1(NAME, T1, V1) DEF_ARGS_##F2(NAME, T2, V2) DEF_ARGS_##F3(NAME, T3, V3)    \
         DEF_ARGS_##F4(NAME, T4, V4) DEF_ARGS_##F5(NAME, T5, V5) DEF_ARGS_##F6(NAME, T6, V6)
+#define DEF_ARGS_8(NAME, T0, F0, V0, T1, F1, V1, T2, F2, V2, T3, F3, V3, T4, F4, V4, T5, F5, V5, T6, F6, V6, T7, F7,   \
+                   V7)                                                                                                 \
+    DEF_ARGS_##F0(NAME, T0, V0) DEF_ARGS_##F1(NAME, T1, V1) DEF_ARGS_##F2(NAME, T2, V2) DEF_ARGS_##F3(NAME, T3, V3)    \
+        DEF_ARGS_##F4(NAME, T4, V4) DEF_ARGS_##F5(NAME, T5, V5) DEF_ARGS_##F6(NAME, T6, V6)                            \
+            DEF_ARGS_##F7(NAME, T7, V7)
+#define DEF_ARGS_9(NAME, T0, F0, V0, T1, F1, V1, T2, F2, V2, T3, F3, V3, T4, F4, V4, T5, F5, V5, T6, F6, V6, T7, F7,   \
+                   V7, T8, F8, V8)                                                                                     \
+    DEF_ARGS_##F0(NAME, T0, V0) DEF_ARGS_##F1(NAME, T1, V1) DEF_ARGS_##F2(NAME, T2, V2) DEF_ARGS_##F3(NAME, T3, V3)    \
+        DEF_ARGS_##F4(NAME, T4, V4) DEF_ARGS_##F5(NAME, T5, V5) DEF_ARGS_##F6(NAME, T6, V6)                            \
+            DEF_ARGS_##F7(NAME, T7, V7) DEF_ARGS_##F8(NAME, T8, V8)
 #define DEF_ATTRIBUTE(NAME, NUM_ARGS, ...)                                                                             \
     case Attribute_##NAME##Attribute:                                                                                  \
         fb_attribute = Create##NAME##Attribute(_builder DEF_ARGS_##NUM_ARGS(NAME##Attribute, __VA_ARGS__)).Union();    \