video: tegra: virt: enable gr_comm for oot kernel

- enable config for oot
- add GPL license
- include different tegra hv header for oot

Jira GVSCI-16046

Change-Id: I8358b15cec33fbd5fd98265adc9152d8e335511d
Signed-off-by: Richard Zhao <rizhao@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvidia/+/2866154
Reviewed-by: svcacv <svcacv@nvidia.com>
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: svc-mobile-cert <svc-mobile-cert@nvidia.com>
Reviewed-by: svc_kernel_abi <svc_kernel_abi@nvidia.com>
Reviewed-by: Sagar Kamble <skamble@nvidia.com>
Reviewed-by: Aparna Das <aparnad@nvidia.com>
Reviewed-by: Manish Bhardwaj <mbhardwaj@nvidia.com>
GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com>

drivers/video/tegra/virt/Makefile

@@ -1 +1,6 @@
+ifeq ($(CONFIG_TEGRA_OOT_MODULE),m)
+ccflags-y += -DCONFIG_TEGRA_GR_VIRTUALIZATION -DCONFIG_TEGRA_OOT_MODULE
+obj-m = tegra_gr_comm.o
+else
 obj-$(CONFIG_TEGRA_GR_VIRTUALIZATION) += tegra_gr_comm.o
+endif

drivers/video/tegra/virt/tegra_gr_comm.c

@@ -1,7 +1,7 @@
 /*
  * Tegra Graphics Virtualization Communication Framework
  *
- * Copyright (c) 2013-2022, NVIDIA Corporation. All rights reserved.
+ * Copyright (c) 2013-2023, NVIDIA Corporation. All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms and conditions of the GNU General Public License,
@@ -29,10 +29,15 @@
 #include <linux/kthread.h>
 #include <linux/io.h>
 #include <linux/interrupt.h>
-#include <linux/tegra-ivc.h>
 #include <linux/tegra_gr_comm.h>
 #include <linux/module.h>
 
+#ifdef CONFIG_TEGRA_OOT_MODULE
+#include <soc/tegra/virt/hv-ivc.h>
+#else
+#include <linux/tegra-ivc.h>
+#endif
+
 #define NUM_QUEUES   5
 #define NUM_CONTEXTS 1
 
@@ -625,3 +630,5 @@ void tegra_gr_comm_oob_put_ptr(void *handle)
 	mutex_unlock(&queue->mempool_lock);
 }
 EXPORT_SYMBOL(tegra_gr_comm_oob_put_ptr);
+
+MODULE_LICENSE("GPL v2");