Add Tosa Sin/Cos to schema

- Add Tosa Sin/Cos to the serialization_lib schema
- Generated related header files with the new schema

Signed-off-by: Jerry Ge <jerry.ge@arm.com>
Change-Id: If424ff2b64538e8ffd5342b6ebb9a022537d5c4c
diff --git a/schema/tosa.fbs b/schema/tosa.fbs
index 1c2a85e..e37c89a 100644
--- a/schema/tosa.fbs
+++ b/schema/tosa.fbs
@@ -127,6 +127,8 @@
   SUB_SHAPE,
   MUL_SHAPE,
   DIV_SHAPE,
+  COS,
+  SIN,
 }
 
 union Attribute {