clang-format: re-format for clang-19

clang-format-19 isn't compatible with the clang-format-18 output, so we
need to reformat the code with the latest version.  A few parameters
in clang-tidy have been deprecated, so adjust the style file
accordingly.

See Ie2f6eb3b043f2d655c9df806815afd7971fd0947 for updated style.
See I88192b41ab7a95599a90915013579608af7bc56f for clang-19 enablement.

Change-Id: Ie38f1c94398df0d663d0e27d2e2e1d0d77a47fae
Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
diff --git a/tests/dsp/firmware_update.cpp b/tests/dsp/firmware_update.cpp
index bfaa020..6a2ec68 100644
--- a/tests/dsp/firmware_update.cpp
+++ b/tests/dsp/firmware_update.cpp
@@ -1705,9 +1705,7 @@
     constexpr size_t payloadLen =
         PLDM_QUERY_DOWNSTREAM_IDENTIFIERS_RESP_MIN_LEN + downstream_devices_len;
 
-    struct pldm_query_downstream_identifiers_resp resp_data
-    {
-    };
+    struct pldm_query_downstream_identifiers_resp resp_data{};
     PLDM_MSG_DEFINE_P(response, payloadLen);
     struct pldm_downstream_device_iter devs;
     struct pldm_downstream_device dev;
@@ -1820,9 +1818,7 @@
     constexpr size_t payloadLen =
         PLDM_QUERY_DOWNSTREAM_IDENTIFIERS_RESP_MIN_LEN + downstream_devices_len;
 
-    struct pldm_query_downstream_identifiers_resp resp_data
-    {
-    };
+    struct pldm_query_downstream_identifiers_resp resp_data{};
     PLDM_MSG_DEFINE_P(response, payloadLen);
     struct pldm_downstream_device_iter devs;
     struct pldm_downstream_device dev;
@@ -1940,9 +1936,7 @@
     constexpr size_t payloadLen =
         PLDM_QUERY_DOWNSTREAM_IDENTIFIERS_RESP_MIN_LEN + downstream_devices_len;
 
-    struct pldm_query_downstream_identifiers_resp resp_data
-    {
-    };
+    struct pldm_query_downstream_identifiers_resp resp_data{};
     PLDM_MSG_DEFINE_P(response, payloadLen);
     struct pldm_downstream_device_iter devs;
     struct pldm_downstream_device dev;