[embedded] When building embedded _Concurrency.o, disable incremental LLVM codegen

Author: kubamracek

stdlib/public/Concurrency/CMakeLists.txt

@@ -269,7 +269,7 @@ if(SWIFT_SHOULD_BUILD_EMBEDDED_STDLIB AND SWIFT_SHOULD_BUILD_EMBEDDED_CONCURRENC
       SWIFT_COMPILE_FLAGS
         ${extra_swift_compile_flags} -enable-experimental-feature Embedded
         -parse-stdlib -DSWIFT_CONCURRENCY_EMBEDDED
-        -Xfrontend -emit-empty-object-file
+        -Xfrontend -emit-empty-object-file -Xfrontend -disable-incremental-llvm-codegen
         ${SWIFT_RUNTIME_CONCURRENCY_SWIFT_FLAGS}
       C_COMPILE_FLAGS
         ${extra_c_compile_flags} ${SWIFT_RUNTIME_CONCURRENCY_C_FLAGS} -DSWIFT_CONCURRENCY_EMBEDDED=1