fix typo

Author: chraac

ggml/src/ggml-qnn/shared/common.cpp

@@ -31,7 +31,7 @@ struct ggml_backend_qnn_reg_impl : ggml_backend_reg {
 
             backend_device_proxy_ptr device_proxy;
             if (device_enum < QNN_BACKEND_COUNT) {
-#ifdef GGML_HEXAGON_NPU_ONLY
+#ifndef GGML_HEXAGON_NPU_ONLY
                 device_proxy = create_qnn_backend_context(device_enum);
 #else
                 LOG_DEBUG("skip qnn device %d\n", (int) device_enum);