libc/symtab: Don't include symtab.h in the header files

to unify the inclusion of symtab.h only from the source files

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>

libs/libc/dlfcn/lib_dlsym.c

@@ -29,6 +29,7 @@
 #include <debug.h>
 #include <errno.h>
 
+#include <nuttx/symtab.h>
 #include <nuttx/module.h>
 #include <nuttx/lib/modlib.h>
 

libs/libc/modlib/modlib_symbols.c

@@ -31,6 +31,7 @@
 #include <errno.h>
 #include <debug.h>
 
+#include <nuttx/symtab.h>
 #include <nuttx/lib/modlib.h>
 
 #include "libc.h"

libs/libc/modlib/modlib_symtab.c

@@ -26,6 +26,7 @@
 
 #include <assert.h>
 
+#include <nuttx/symtab.h>
 #include <nuttx/lib/modlib.h>
 
 /****************************************************************************

libs/libc/stdio/lib_libvsprintf.c

@@ -51,6 +51,7 @@
 #include <nuttx/compiler.h>
 #include <nuttx/streams.h>
 #include <nuttx/allsyms.h>
+#include <nuttx/symtab.h>
 
 #include "lib_dtoa_engine.h"
 #include "lib_ultoa_invert.h"

libs/libc/symtab/symtab_allsyms.c

@@ -23,6 +23,7 @@
  ****************************************************************************/
 
 #include <nuttx/allsyms.h>
+#include <nuttx/symtab.h>
 
 /****************************************************************************
  * Public Data