Add Qualcomm feature flag, and some NFCs (#427)

This PR just adds the Qualcomm feature if the device is detected to be
Qualcomm via apiquery.

Author: bob80905

test/lit.cfg.py

@@ -79,6 +79,8 @@ def setDeviceFeatures(config, device, compiler):
             config.available_features.add("NV-Reconvergence-Issue-320")
     if "AMD" in device["Description"]:
         config.available_features.add("%s-AMD" % API)
+    if "Qualcomm" in device["Description"]:
+        config.available_features.add("%s-QC" % API)
 
     config.available_features.add("%s-%s" % (compiler, API))
 
@@ -100,7 +102,6 @@ def setDeviceFeatures(config, device, compiler):
         config.available_features.add("Int16")
         config.available_features.add("Int64")
         config.available_features.add("Half")
-        config.available_features.add("Int64")
 
     if device["API"] == "Vulkan":
         if device["Features"].get("shaderInt16", False):
@@ -194,7 +195,7 @@ def setDeviceFeatures(config, device, compiler):
         target_device = device
     if device["API"] == "Vulkan" and config.offloadtest_enable_vulkan:
         target_device = device
-    # Bail from th eloop if we found a device that matches what we're looking for.
+    # Bail from the loop if we found a device that matches what we're looking for.
     if target_device:
         break