rockchip: rk3288: add default TPL_LDSCRIPT value in Kconfig

We share the same TPL_LDSCRIPT for all rk3288 board, add
default value in Kconfig.

Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
diff --git a/arch/arm/mach-rockchip/rk3288/Kconfig b/arch/arm/mach-rockchip/rk3288/Kconfig
index 9a4c130..57b7962 100644
--- a/arch/arm/mach-rockchip/rk3288/Kconfig
+++ b/arch/arm/mach-rockchip/rk3288/Kconfig
@@ -160,6 +160,9 @@
 config SPL_SERIAL_SUPPORT
 	default y
 
+config TPL_LDSCRIPT
+	default "arch/arm/mach-rockchip/u-boot-tpl.lds"
+
 config TPL_MAX_SIZE
 	default 32768