rockchip: rk3288: update u-boot raw image size for all boards

Some rk3288 boards are using raw image of u-boot.bin, and now
it's much bigger than default 200KB, update CONFIG_SYS_MONITOR_LEN
to 600KB.

Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
diff --git a/include/configs/rk3288_common.h b/include/configs/rk3288_common.h
index 7c79ed6..06073cb 100644
--- a/include/configs/rk3288_common.h
+++ b/include/configs/rk3288_common.h
@@ -35,6 +35,8 @@
 #define SDRAM_BANK_SIZE			(2UL << 30)
 #define SDRAM_MAX_SIZE			0xfe000000
 
+#define CONFIG_SYS_MONITOR_LEN (600 * 1024)
+
 #ifndef CONFIG_SPL_BUILD
 /* usb otg */
 
diff --git a/include/configs/tinker_rk3288.h b/include/configs/tinker_rk3288.h
index 32057b3..5adae68 100644
--- a/include/configs/tinker_rk3288.h
+++ b/include/configs/tinker_rk3288.h
@@ -18,6 +18,5 @@
 	func(DHCP, dchp, na)
 
 #define CONFIG_SYS_MMC_ENV_DEV 1
-#define CONFIG_SYS_MONITOR_LEN (600 * 1024)
 
 #endif