fw-api: Make wmi_stats_ext_event_fixed_param::data_type optional

Fixes WFC on sm6375.

Change-Id: Ib983f2511f8a8769ad218fbc1693a1e586ed5cf6

Author: luk1337

drivers/staging/fw-api/fw/wmi_unified.h

@@ -30269,7 +30269,9 @@ typedef struct {
      * the host can interpret the data[] contents, and if so, how to
      * interpret them.
      */
+#if !defined(CONFIG_ARCH_HOLI) && !defined(CONFIG_ARCH_BLAIR)
     A_UINT32 data_type;
+#endif
     /* This structure is used to send REQ binary blobs
      * from firmware to application/service where Host drv is pass through.
      * Alternatively, by specifying in the data_type field what kind of