gpu: nvgpu: update the config options & makefile

Added dependency between the Kconfig options as follows where
'->' indicates 'depends on' relation:

SUPPORT_CDE -> COMPRESSION -> DMABUF_HAS_DRVDATA
DGPU -> GK20A_PCI

Defined Kconfig option for VPR and for DGPU that is dependent GK20A_PCI
as well. DGPU related sources are now compiled under config flag DGPU.
Also update conditional compilation of the driver paths w.r.t DGPU,
VPR and COMPRESSION flags.

Bug 2834141

Change-Id: Ia0a39d6d4cf8b36e7f955b7355a5ab41783f821c
Signed-off-by: Sagar Kamble <skamble@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2299627
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>

drivers/gpu/nvgpu/os/linux/vm.c

@@ -23,6 +23,7 @@
 #include <nvgpu/rbtree.h>
 #include <nvgpu/vm_area.h>
 #include <nvgpu/nvgpu_mem.h>
+#include <nvgpu/nvgpu_sgt.h>
 #include <nvgpu/page_allocator.h>
 #include <nvgpu/vidmem.h>
 #include <nvgpu/utils.h>