Fix missing includes (#2605)

The affected source files were relying on transitive includes that
were no longer included after recent llvm-project changes (such as
36c6632eb43b ("[IR] Don't include PassInstrumentation.h in
PassManager.h (NFC) (#96219)", 2024-06-21)).

Author: svenvh

lib/SPIRV/SPIRVReader.cpp

@@ -71,6 +71,7 @@
 #include "llvm/IR/MDBuilder.h"
 #include "llvm/IR/Metadata.h"
 #include "llvm/IR/Module.h"
+#include "llvm/IR/PassInstrumentation.h"
 #include "llvm/IR/Type.h"
 #include "llvm/IR/TypedPointerType.h"
 #include "llvm/Support/Casting.h"

lib/SPIRV/libSPIRV/SPIRVDebug.cpp

@@ -41,6 +41,7 @@
 
 #include "llvm/IR/Verifier.h"
 #include "llvm/Support/CommandLine.h"
+#include "llvm/Support/Debug.h"
 #include "llvm/Support/raw_ostream.h"
 
 #define DEBUG_TYPE "spirv-regularization"