MLK-17262 video: Fix build break when CONFIG_VIDEO_IMX_HDP_LOAD is not selected
Met build errors below when CONFIG_VIDEO_IMX_HDP_LOAD is not selected. Because the u-boot
make script checks the "$(obj-y) $(obj-m) $(obj-) $(subdir-m) $(lib-target)" for built-in target.
aarch64-poky-linux-ld.bfd: cannot find drivers/video/imx/built-in.o: No such file or directory
scripts/Makefile.build:359: recipe for target 'drivers/video/built-in.o' failed
Signed-off-by: Ye Li <ye.li@nxp.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>