GH-49428: [C++][Gandiva] Add support for LLVM 22.1.0 (#49429)

### Rationale for this change

Some of our CI jobs fail because conda jobs are pulling LLVM 22.1.0 and we are not compatible.

### What changes are included in this PR?

Add 22.1.0 as compatible LLVM and minor fix to update the location of PassPlugin.h due to:
- llvm/llvm-project#173279

### Are these changes tested?

Yes via CI

### Are there any user-facing changes?

No, the only change is that LLVM 22.1.0 will be supported.

* GitHub Issue: #49428

Lead-authored-by: Raúl Cumplido <raulcumplido@gmail.com>
Co-authored-by: Sutou Kouhei <kou@cozmixng.org>
Signed-off-by: Sutou Kouhei <kou@clear-code.com>

Author: raulcd

cpp/CMakeLists.txt

@@ -177,6 +177,7 @@ set(ARROW_DOC_DIR "share/doc/${PROJECT_NAME}")
 set(BUILD_SUPPORT_DIR "${CMAKE_SOURCE_DIR}/build-support")
 
 set(ARROW_LLVM_VERSIONS
+    "22.1"
     "21.1"
     "20.1"
     "19.1"

cpp/src/gandiva/engine.cc

@@ -72,7 +72,11 @@
 #if LLVM_VERSION_MAJOR >= 14
 #  include <llvm/IR/PassManager.h>
 #  include <llvm/MC/TargetRegistry.h>
-#  include <llvm/Passes/PassPlugin.h>
+#  if LLVM_VERSION_MAJOR >= 22
+#    include <llvm/Plugins/PassPlugin.h>
+#  else
+#    include <llvm/Passes/PassPlugin.h>
+#  endif
 #  include <llvm/Transforms/IPO/GlobalOpt.h>
 #  include <llvm/Transforms/Scalar/NewGVN.h>
 #  include <llvm/Transforms/Scalar/SimplifyCFG.h>