media: rkvdec: Move cabac tables to their own source file

This is in preparation to add support for new variants that will use the
same tables.

Tested-by: Diederik de Haas <didi.debian@cknow.org>  # Rock 5B
Reviewed-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Detlev Casanova <detlev.casanova@collabora.com>
Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>

Author: cazou

drivers/media/platform/rockchip/rkvdec/Makefile

@@ -1,3 +1,8 @@
 obj-$(CONFIG_VIDEO_ROCKCHIP_VDEC) += rockchip-vdec.o
 
-rockchip-vdec-y += rkvdec.o rkvdec-h264.o rkvdec-hevc.o rkvdec-vp9.o
+rockchip-vdec-y += \
+		   rkvdec.o \
+		   rkvdec-cabac.o \
+		   rkvdec-h264.o \
+		   rkvdec-hevc.o \
+		   rkvdec-vp9.o