[hlsl] Add `textureLoad` support.

This Cl adds support to the HLSL IR backend for `textureLoad`

Bug: 42251045
Change-Id: I6a432f4fcfedf5140b45166f2fafde8adaa9bc23
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/197479
Reviewed-by: James Price <jrprice@google.com>
Commit-Queue: dan sinclair <dsinclair@chromium.org>
diff --git a/src/tint/lang/core/parameter_usage.h b/src/tint/lang/core/parameter_usage.h
index 5d16272..7c9e3b7 100644
--- a/src/tint/lang/core/parameter_usage.h
+++ b/src/tint/lang/core/parameter_usage.h
@@ -59,6 +59,7 @@
     kHeight,
     kInputAttachment,
     kLevel,
+    kLocation,
     kNumLevels,
     kOffset,
     kSampleIndex,