Modify the Hardware message of /proc/cpuinfo to "Rockchip (Device Tree)"

Signed-off-by: yi-hsin_hung <yi-hsin_hung@asus.com>
Change-Id: Ibabdf28c6be9fbf39cc3f04f85582c9aa7a73f3e

Author: yihsin-hung

arch/arm/kernel/devtree.c

@@ -220,7 +220,7 @@ const struct machine_desc * __init setup_machine_fdt(unsigned int dt_phys)
 	const struct machine_desc *mdesc, *mdesc_best = NULL;
 
 #ifdef CONFIG_ARCH_MULTIPLATFORM
-	DT_MACHINE_START(GENERIC_DT, "Generic DT based system")
+	DT_MACHINE_START(GENERIC_DT, "Rockchip (Device Tree)")
 	MACHINE_END
 
 	mdesc_best = &__mach_desc_GENERIC_DT;