[gcc r15-9258] libstdc++: Add new headers to Doxygen config file

[Jonathan Wakely]

https://gcc.gnu.org/g:5430fcd1a3222d62c1b9560de251268c8bc50303

commit r15-9258-g5430fcd1a3222d62c1b9560de251268c8bc50303
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Thu Apr 3 15:36:08 2025 +0100

    libstdc++: Add new headers to Doxygen config file
    
    libstdc++-v3/ChangeLog:
    
            * doc/doxygen/user.cfg.in (INPUT): Add flat_map, flat_set,
            text_encoding, stdbit.h and stdckdint.h.

Diff:
---
 libstdc++-v3/doc/doxygen/user.cfg.in | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/libstdc++-v3/doc/doxygen/user.cfg.in b/libstdc++-v3/doc/doxygen/user.cfg.in
index ae50f6dd0c74..19ae67a67bac 100644
--- a/libstdc++-v3/doc/doxygen/user.cfg.in
+++ b/libstdc++-v3/doc/doxygen/user.cfg.in
@@ -861,6 +861,8 @@ INPUT                  = @srcdir@/doc/doxygen/doxygroups.cc \
                          include/deque \
                          include/expected \
                          include/filesystem \
+                         include/flat_map \
+                         include/flat_set \
                          include/forward_list \
                          include/format \
                          include/fstream \
@@ -906,6 +908,7 @@ INPUT                  = @srcdir@/doc/doxygen/doxygroups.cc \
                          include/string_view \
                          include/syncstream \
                          include/system_error \
+                         include/text_encoding \
                          include/thread \
                          include/tuple \
                          include/typeindex \
@@ -942,6 +945,8 @@ INPUT                  = @srcdir@/doc/doxygen/doxygroups.cc \
                          include/cwchar \
                          include/cuchar \
                          include/cwctype \
+                         include/stdbit.h \
+                         include/stdckdint.h \
                          include/ \
                          include/bits \
                          include/@host_alias@/bits \