ARM: nspire: Remove unneeded nspire_map_io()

nspire_map_io() just calls debug_ll_io_init().

If machine_desc.map_io is not set, devicemaps_init() in the
common ARM code will call debug_ll_io_init(), so nspire_map_io() and the
initialization of .map_io can be removed.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/arm/mach-nspire/nspire.c

@@ -33,11 +33,6 @@ static const char *const nspire_dt_match[] __initconst = {
 	NULL,
 };
 
-static void __init nspire_map_io(void)
-{
-	debug_ll_io_init();
-}
-
 static struct clcd_board nspire_clcd_data = {
 	.name		= "LCD",
 	.caps		= CLCD_CAP_5551 | CLCD_CAP_565,
@@ -71,7 +66,6 @@ static void nspire_restart(enum reboot_mode mode, const char *cmd)
 
 DT_MACHINE_START(NSPIRE, "TI-NSPIRE")
 	.dt_compat	= nspire_dt_match,
-	.map_io		= nspire_map_io,
 	.init_machine	= nspire_init,
 	.restart	= nspire_restart,
 MACHINE_END