meson: install keyboard maps only if necessary

They are required only for system emulation (i.e. have_system is true).

Signed-off-by: Carlos Santos <casantos@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
diff --git a/pc-bios/keymaps/meson.build b/pc-bios/keymaps/meson.build
index 158a3b4..bff3083 100644
--- a/pc-bios/keymaps/meson.build
+++ b/pc-bios/keymaps/meson.build
@@ -47,7 +47,7 @@
                        build_by_default: true,
                        output: km,
                        command: [native_qemu_keymap, '-f', '@OUTPUT@', args.split()],
-                       install: true,
+                       install: have_system,
                        install_dir: qemu_datadir / 'keymaps')
   endforeach
 
@@ -56,4 +56,6 @@
   install_data(keymaps.keys(), install_dir: qemu_datadir / 'keymaps')
 endif
 
-install_data(['sl', 'sv'], install_dir: qemu_datadir / 'keymaps')
+if have_system
+  install_data(['sl', 'sv'], install_dir: qemu_datadir / 'keymaps')
+endif