layers: Update PV generator for stype special-case

PV still uses a helper function to predict the SType name, and the
coming 8BitStorage extension confuses it. Added special case for this
struct type. This is required for the upcoming 1.1.80 header update.
diff --git a/scripts/parameter_validation_generator.py b/scripts/parameter_validation_generator.py
index dbbcc41..91bff5c 100644
--- a/scripts/parameter_validation_generator.py
+++ b/scripts/parameter_validation_generator.py
@@ -714,6 +714,7 @@
         value = value.replace('LODGather', 'LOD_Gather')
         value = value.replace('Features2', 'FEATURES_2')
         value = value.replace('e16_Bit', 'E_16BIT')
+        value = value.replace('e8_Bit', 'E_8BIT')
         # Change to uppercase
         value = value.upper()
         # Add STRUCTURE_TYPE_