Staging: dt3155v4l: remove private memory allocator

This patch removes the private memory allocator
and all conjugated functions. Now the driver uses
videobuf-dma-contig module for allocations.
Added reserving 4MB coherent memory for private
per device allocations at probe time.

Signed-off-by: Marin Mitov <mitov@issp.bas.bg>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/staging/dt3155v4l/Makefile b/drivers/staging/dt3155v4l/Makefile
index 3a207cc..ce7a3ec 100644
--- a/drivers/staging/dt3155v4l/Makefile
+++ b/drivers/staging/dt3155v4l/Makefile
@@ -1,4 +1 @@
-obj-$(CONFIG_VIDEO_DT3155)	+= dt3155_v4l.o
-dt3155_v4l-objs :=	\
-		dt3155-bufs.o	\
-		dt3155v4l.o
+obj-$(CONFIG_VIDEO_DT3155)	+= dt3155v4l.o