gpu: nvgpu: move therm debugfs to linux

Move debugfs related code of therm from common driver to linux
specific part of the driver. gp106_therm_debugfs_init()
is updated to use nvgpu_os_linux_ops.

This also affects gv100 as gp106_therm_debugfs_init is used
for gv100 as well.

JIRA NVGPU-603

Change-Id: Ia293d14599bc0c91fd1e917b5a430bd8f3d96e56
Signed-off-by: Nitin Kumbhar <nkumbhar@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1797906
GVS: Gerrit_Virtual_Submit
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

drivers/gpu/nvgpu/os/linux/debug_therm_gp106.h

@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2018, 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,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __DEBUG_THERM_GP106_H
+#define __DEBUG_THERM_GP106_H
+
+#ifdef CONFIG_DEBUG_FS
+int gp106_therm_init_debugfs(struct gk20a *g);
+#else
+inline int gp106_therm_init_debugfs(struct gk20a *g)
+{
+	return 0;
+}
+#endif
+
+#endif