Fix build with libopencl-clang2

CMake isn't set up to search for libopencl-clang2.so. To minimize changes to CMake, just symlink the library for now.
Confirmed working [here](https://github.com/sarnex/intel-graphics-compiler/actions/runs/12264262733).

Author: sarnex

scripts/buildIGC.sh

@@ -81,6 +81,11 @@ echo "[Build Status] LLVM_VERSION_PREFERRED = $LLVM_VERSION_PREFERRED"
 
 echo "[Build Status] Prepare install OpenCL Clang"
 dpkg -i ./igc-official-release/*.deb
+if [ -f "/usr/local/lib/libopencl-clang2.so" ] && [ ! -f "/usr/local/lib/libopencl-clang.so" ]; then
+    # Symlink to a library name CMake is set up to handle until either
+    # CMake is updated or the library name is changed back.
+    ln -s /usr/local/lib/libopencl-clang2.so /usr/local/lib/libopencl-clang.so
+fi
 echo "[Build Status] OpenCL Clang INSTALLED"