package/gdb: add patch to fix GCC 15.x build issue with ARC-specific gdb

This commit adds the same patch that was already added to GDB 14.x,
15.x and 16.x to fix a GCC 15.x build issue.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Julien Olivain <ju.o@free.fr>

package/gdb/arc-2023.09-release/0001-readline-tcap.h-Update-definitions-for-C23.patch

@@ -0,0 +1,52 @@
+From 93f772832b96e0c48223c452324e9736d7de051e Mon Sep 17 00:00:00 2001
+From: Chris Packham <judge.packham@gmail.com>
+Date: Wed, 30 Apr 2025 16:49:44 +1200
+Subject: [PATCH] readline/tcap.h: Update definitions for C23
+
+C23 changes how function definitions like int `int tputs ()` are
+interpreted. In older standards this meant that the function arguments
+are unknown. In C23 this is interpreted as `int tputs (void)` so now
+when we compile with GCC15 (which defaults to -std=gnu23) we get an
+error such as
+
+  readline/display.c:2839:17: error: too many arguments to function 'tputs'; expected 0, have 3
+
+Add the function arguments for tgetent(), tgetflag(), tgetnum(),
+tgetstr(), tputs() and tgoto().
+
+Signed-off-by: Chris Packham <judge.packham@gmail.com>
+Approved-By: Tom Tromey <tom@tromey.com>
+Upstream: 5c87b330e910f8be1443c881fd16a70e685f1f2f
+Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
+---
+ readline/readline/tcap.h | 12 ++++++------
+ 1 file changed, 6 insertions(+), 6 deletions(-)
+
+diff --git a/readline/readline/tcap.h b/readline/readline/tcap.h
+index 859e6eed5aa..9e2ed124e49 100644
+--- a/readline/readline/tcap.h
++++ b/readline/readline/tcap.h
+@@ -46,14 +46,14 @@ extern char *UP, *BC;
+ 
+ extern short ospeed;
+ 
+-extern int tgetent ();
+-extern int tgetflag ();
+-extern int tgetnum ();
+-extern char *tgetstr ();
++extern int tgetent (char *bp, const char *name);
++extern int tgetflag (char *id);
++extern int tgetnum (char *id);
++extern char *tgetstr (char *id, char **area);
+ 
+-extern int tputs ();
++extern int tputs (const char *str, int affcnt, int (*putc)(int));
+ 
+-extern char *tgoto ();
++extern char *tgoto (const char *cap, int col, int row);
+ 
+ #endif /* HAVE_TERMCAP_H */
+ 
+-- 
+2.49.0
+