missing spv1.6 support in a few places

Author: Firestar99

crates/rustc_codegen_spirv-target-specs/src/include_str.rs

@@ -44,6 +44,10 @@ pub const TARGET_SPECS: &[(&str, &str)] = &[
         "spirv-unknown-spv1.5.json",
         include_str!("../target-specs/spirv-unknown-spv1.5.json"),
     ),
+    (
+        "spirv-unknown-spv1.6.json",
+        include_str!("../target-specs/spirv-unknown-spv1.6.json"),
+    ),
     (
         "spirv-unknown-vulkan1.0.json",
         include_str!("../target-specs/spirv-unknown-vulkan1.0.json"),

crates/spirv-builder/src/lib.rs

@@ -782,7 +782,7 @@ fn invoke_rustc(builder: &SpirvBuilder) -> Result<PathBuf, SpirvBuilderError> {
             //
             // FIXME(eddyb) consider moving this list, or even `target-specs`,
             // into `rustc_codegen_spirv_types`'s code/source.
-            "spv1.0" | "spv1.1" | "spv1.2" | "spv1.3" | "spv1.4" | "spv1.5" => {}
+            "spv1.0" | "spv1.1" | "spv1.2" | "spv1.3" | "spv1.4" | "spv1.5" | "spv1.6" => {}
             "opengl4.0" | "opengl4.1" | "opengl4.2" | "opengl4.3" | "opengl4.5" => {}
             "vulkan1.0" | "vulkan1.1" | "vulkan1.1spv1.4" | "vulkan1.2" | "vulkan1.3"
             | "vulkan1.4" => {}