Rename FLOAT type to FP32

Signed-off-by: Jeremy Johnson <jeremy.johnson@arm.com>
Change-Id: I2cd6ae85f59fd62a62b7f03ae9667228b54e82db
diff --git a/schema/tosa.fbs b/schema/tosa.fbs
index b3ab991..eb76f75 100644
--- a/schema/tosa.fbs
+++ b/schema/tosa.fbs
@@ -29,7 +29,7 @@
   INT16,
   INT32,
   INT48,
-  FLOAT,
+  FP32,
   UINT16,
   FP16,
 }