tint: Minor IntrinsicTable cleanup

Fix the namespace - this should have been tint::resolver.
Use a single u32 bitset for overload flags instead of multiple fields.

Bug: tint:1504
Change-Id: I633b21ce14e20fc9aeeed5221886c1d22e327bdc
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/90241
Commit-Queue: Ben Clayton <bclayton@chromium.org>
Reviewed-by: Antonio Maiorano <amaiorano@google.com>

tools/src/cmd/intrinsic-gen/gen/builtin_table.go

@@ -102,6 +102,8 @@ type Overload struct {
 	CanBeUsedInStage sem.StageUses
 	// True if the overload is marked as deprecated
 	IsDeprecated bool
+	// The kind of overload
+	Kind string
 }
 
 // Intrinsic is used to create the C++ IntrinsicInfo structure
@@ -202,6 +204,7 @@ func (b *IntrinsicTableBuilder) buildOverload(o *sem.Overload) (Overload, error)
 		ReturnMatcherIndicesOffset: ob.returnTypeMatcherIndicesOffset,
 		CanBeUsedInStage:           o.CanBeUsedInStage,
 		IsDeprecated:               o.IsDeprecated,
+		Kind:                       string(o.Decl.Kind),
 	}, nil
 }