[guest] Remove Fuchsia syslog_static dependency

Bug:b/282968393

Change-Id: I4ca6239b3386f923925637ed0b279abbc2a5d37e
diff --git a/guest/fuchsia/include/log/log.h b/guest/fuchsia/include/log/log.h
index 8b451ae..df9de7f 100644
--- a/guest/fuchsia/include/log/log.h
+++ b/guest/fuchsia/include/log/log.h
@@ -2,5 +2,14 @@
 #define __LOG_LOG_H__
 
 #include <cutils/log.h>
+#include <stdarg.h>
+#include <stdint.h>
+
+#ifdef __Fuchsia__
+extern "C" {
+void gfxstream_fuchsia_log(int8_t severity, const char* tag, const char* file, int line,
+                           const char* format, va_list va);
+}
+#endif
 
 #endif