dzn: Support dynamic line width

.wideLines = false, which forbids the user to set the line width
to something different than 1. We're thus safe to claim support
for dynamic line width and do nothing in CmdSetLineWidth() other
than checking the value passed is 1.0f.

Reviewed-by: Jesse Natalie <jenatali@microsoft.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16971>

src/microsoft/vulkan/dzn_pipeline.c

@@ -1168,6 +1168,9 @@ dzn_graphics_pipeline_create(struct dzn_device *device,
             if (ret)
                goto out;
             break;
+         case VK_DYNAMIC_STATE_LINE_WIDTH:
+            /* Nothing to do since we just support lineWidth = 1. */
+            break;
          default: unreachable("Unsupported dynamic state");
          }
       }