rockchip: Move the default timer init to a common file

Rather than repeating the same code in two files (SPL and TPL), move it
to a shared filed.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Dragan Simic <dsimic@manjaro.org>
Reviewed-by: Quentin Schulz <quentin.schulz@cherry.de>
diff --git a/arch/arm/mach-rockchip/Makefile b/arch/arm/mach-rockchip/Makefile
index c07bdae..3b13891 100644
--- a/arch/arm/mach-rockchip/Makefile
+++ b/arch/arm/mach-rockchip/Makefile
@@ -8,9 +8,9 @@
 # inaccessible/protected memory (and the bootrom-helper assumes that
 # the stack-pointer is valid before switching to the U-Boot stack).
 obj-spl-$(CONFIG_ROCKCHIP_BROM_HELPER) += bootrom.o
-obj-spl-$(CONFIG_SPL_ROCKCHIP_COMMON_BOARD) += spl.o spl-boot-order.o
+obj-spl-$(CONFIG_SPL_ROCKCHIP_COMMON_BOARD) += spl.o spl-boot-order.o spl_common.o
 obj-tpl-$(CONFIG_ROCKCHIP_BROM_HELPER) += bootrom.o
-obj-tpl-$(CONFIG_TPL_ROCKCHIP_COMMON_BOARD) += tpl.o
+obj-tpl-$(CONFIG_TPL_ROCKCHIP_COMMON_BOARD) += tpl.o spl_common.o
 obj-tpl-$(CONFIG_ROCKCHIP_PX30) += px30-board-tpl.o
 
 obj-spl-$(CONFIG_ROCKCHIP_RK3036) += rk3036-board-spl.o