system/globals: Build as common code

Now that all targets have the graphic dimension variables
initialized the same way, we can move them to the common
file unit, having them built once. Remove the now empty
globals-target.c file. The command line '-g WxH[xD]' option
is not changed and behaves the same.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20260216213121.47122-9-philmd@linaro.org>

system/globals-target.c

@@ -1,14 +0,0 @@
-/*
- * Global variables that should not exist (target specific)
- *
- * Copyright (c) 2003-2008 Fabrice Bellard
- *
- * SPDX-License-Identifier: MIT
- */
-
-#include "qemu/osdep.h"
-#include "system/system.h"
-
-int graphic_width;
-int graphic_height;
-int graphic_depth;

system/globals.c

@@ -49,6 +49,9 @@ bool enable_cpu_pm;
 int autostart = 1;
 int vga_interface_type = VGA_NONE;
 bool vga_interface_created;
+int graphic_width;
+int graphic_height;
+int graphic_depth;
 Chardev *parallel_hds[MAX_PARALLEL_PORTS];
 QEMUOptionRom option_rom[MAX_OPTION_ROMS];
 int nb_option_roms;

system/meson.build

@@ -1,6 +1,5 @@
 specific_ss.add(when: 'CONFIG_SYSTEM_ONLY', if_true: [files(
   'arch_init.c',
-  'globals-target.c',
 )])
 
 system_ss.add(files(