Update doxygen annotations in libosmocore
This adds and improves doxygen API descriptions all over libosmocore,
reducing the 'white spots' that don't have any documentation.
diff --git a/src/backtrace.c b/src/backtrace.c
index 5b93bec..6cd798c 100644
--- a/src/backtrace.c
+++ b/src/backtrace.c
@@ -70,6 +70,8 @@
}
/*! \brief Generate and log a call back-trace
+ * \param[in] subsys Logging sub-system
+ * \param[in] level Logging level
*
* This function will generate a function call back-trace of the
* current process and log it to the specified subsystem and