ARM: OMAP2+: Fix n900 board name for legacy user space

N900 legacy user space apps need the board name in
/proc/cpuinfo to work properly for the Hardware entry.

For other boards this should not be an issues and they
can use the generic Hardware entry.

Let's fix the issue by adding a custom DT_MACHINE_START
for n900.
Tested-by: Pali Rohár <pali.rohar@gmail.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/mach-omap2/board-generic.c

@@ -77,6 +77,24 @@ MACHINE_END
 #endif
 
 #ifdef CONFIG_ARCH_OMAP3
+/* Some boards need board name for legacy userspace in /proc/cpuinfo */
+static const char *const n900_boards_compat[] __initconst = {
+	"nokia,omap3-n900",
+	NULL,
+};
+
+DT_MACHINE_START(OMAP3_N900_DT, "Nokia RX-51 board")
+	.reserve	= omap_reserve,
+	.map_io		= omap3_map_io,
+	.init_early	= omap3430_init_early,
+	.init_machine	= omap_generic_init,
+	.init_late	= omap3_init_late,
+	.init_time	= omap3_sync32k_timer_init,
+	.dt_compat	= n900_boards_compat,
+	.restart	= omap3xxx_restart,
+MACHINE_END
+
+/* Generic omap3 boards, most boards can use these */
 static const char *const omap3_boards_compat[] __initconst = {
 	"ti,omap3430",
 	"ti,omap3",