gpu: nvgpu: Define watchdog timeout for PCIe

Watchdog timeout is now zero for PCIe devices. This makes also
semaphore acquire timeout to be zero. Fix the timeout to be the
same as for platform devices.

JIRA DNVGPU-7

Change-Id: I5c2921b65f4f957c08a4e9f815deeed2ba231013
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/1134441

drivers/gpu/nvgpu/pci.c

@@ -61,6 +61,8 @@ static struct gk20a_platform nvgpu_pci_device = {
 	.is_railgated = nvgpu_pci_tegra_is_railgated,
 
 	.default_big_page_size	= SZ_64K,
+
+	.ch_wdt_timeout_ms = 7000,
 };
 
 static struct pci_device_id nvgpu_pci_table[] = {