rockchip: Disable simple-bus in SPL for firefly-rk3288, jerry

This is not needed for booting, so drop it from SPL to save about 300 bytes.
Signed-off-by: NSimon Glass <sjg@chromium.org>

configs/chromebook_jerry_defconfig

@@ -17,6 +17,7 @@ CONFIG_REGMAP=y
 CONFIG_SPL_REGMAP=y
 CONFIG_SYSCON=y
 CONFIG_SPL_SYSCON=y
+# CONFIG_SPL_SIMPLE_BUS is not set
 CONFIG_CLK=y
 CONFIG_SPL_CLK=y
 CONFIG_ROCKCHIP_GPIO=y

configs/firefly-rk3288_defconfig

@@ -17,6 +17,7 @@ CONFIG_REGMAP=y
 CONFIG_SPL_REGMAP=y
 CONFIG_SYSCON=y
 CONFIG_SPL_SYSCON=y
+# CONFIG_SPL_SIMPLE_BUS is not set
 CONFIG_CLK=y
 CONFIG_SPL_CLK=y
 CONFIG_ROCKCHIP_GPIO=y