Fix include path for check-gdb-mlir-support to include the MLIR binary dir

This fixes a build failure:

fatal error: 'mlir/IR/BuiltinTypes.h.inc' file not found

GitOrigin-RevId: 476db17dcb64ef3ec6e247f4b1c673b57f61a367

CMakeLists.txt

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4b6af52..0abbe46 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -26,7 +26,9 @@
   add_llvm_executable(check-gdb-mlir-support
         llvm-prettyprinters/gdb/mlir-support.cpp
   )
-  target_include_directories(check-gdb-mlir-support PRIVATE ${LLVM_EXTERNAL_MLIR_SOURCE_DIR}/include)
+  target_include_directories(check-gdb-mlir-support PRIVATE
+                               ${LLVM_EXTERNAL_MLIR_SOURCE_DIR}/include
+                               ${LLVM_BINARY_DIR}/tools/mlir/include)
   target_link_libraries(check-gdb-mlir-support PRIVATE MLIRIR)
   list(APPEND DEBUGINFO_TEST_DEPS check-gdb-mlir-support)
   set(MLIR_SOURCE_DIR  ${LLVM_EXTERNAL_MLIR_SOURCE_DIR})