Update on "use-pt-pinned-commit for test-arm-{backend,reference}-dele…

…gation"

Without this, these builds don't respect the torchgen pinned commit and thus fail with #7546.

Differential Revision: [D67996459](https://our.internmc.facebook.com/intern/diff/D67996459/)

[ghstack-poisoned]

examples/arm/executor_runner/CMakeLists.txt

@@ -351,8 +351,9 @@ target_link_options( arm_executor_runner PUBLIC LINKER:-Map=arm_executor_runner.
 
 # ET headers and generated headers includes
 target_include_directories(
-  arm_executor_runner PRIVATE ${ET_INCLUDE_PATH} ${CMAKE_CURRENT_BINARY_DIR}
+  arm_executor_runner PRIVATE ${ET_INCLUDE_PATH} ${ET_DIR_PATH}/runtime/core/portable_type${CMAKE_CURRENT_BINARY_DIR}
 )
+target_compile_definitions(arm_executor_runner PRIVATE C10_USING_CUSTOM_GENERATED_MACROS)
 
 if(SEMIHOSTING)
   target_compile_definitions(arm_executor_runner PUBLIC SEMIHOSTING)