drivers: video: tidss: Makefile: Add condition to compile TIDSS at SPL

To enable TIDSS driver only at SPL stage add rule to compile the TIDSS
video driver.

CONFIG_$(SPL_)VIDEO_TIDSS will compile tidss_drv, at SPL only if
CONFIG_SPL_VIDEO_TIDSS is defined and at u-boot proper if
CONFIG_VIDEO_TIDSS is defined.

Signed-off-by: Nikhil M Jain <n-jain1@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/video/Makefile b/drivers/video/Makefile
index 868e834..a609e35 100644
--- a/drivers/video/Makefile
+++ b/drivers/video/Makefile
@@ -32,7 +32,7 @@
 obj-${CONFIG_VIDEO_ROCKCHIP} += rockchip/
 obj-${CONFIG_VIDEO_STM32} += stm32/
 obj-${CONFIG_VIDEO_TEGRA124} += tegra124/
-obj-${CONFIG_VIDEO_TIDSS} += tidss/
+obj-${CONFIG_$(SPL_)VIDEO_TIDSS} += tidss/
 obj-y += ti/
 
 obj-$(CONFIG_ATMEL_HLCD) += atmel_hlcdfb.o
diff --git a/drivers/video/tidss/Makefile b/drivers/video/tidss/Makefile
index f4f8c6c..a29cee2 100644
--- a/drivers/video/tidss/Makefile
+++ b/drivers/video/tidss/Makefile
@@ -9,4 +9,4 @@
 # Author: Tomi Valkeinen <tomi.valkeinen@ti.com>
 
 
-obj-${CONFIG_VIDEO_TIDSS} = tidss_drv.o
+obj-${CONFIG_$(SPL_)VIDEO_TIDSS} = tidss_drv.o