gpu: nvgpu: posix: move the posix dir to os

Since the posix code is supporting a particular OS this code
should belong under os/ not common/.

Change-Id: Idf5f75b8ab9d614c9dd43ea23dab8df3c346c0ef
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1800658
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

drivers/gpu/nvgpu/os/posix/bug.c

@@ -0,0 +1,67 @@
+/*
+ * Copyright (c) 2018, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#include <nvgpu/log.h>
+
+#include <nvgpu/posix/bug.h>
+
+__attribute__ ((noreturn))
+static void __hang(void)
+{
+	nvgpu_err(NULL, "Hanging!");
+
+	while (1)
+		;
+}
+
+static void __dump_stack(unsigned int skip_frames)
+{
+	return;
+}
+
+void dump_stack(void)
+{
+	__dump_stack(0);
+}
+
+/*
+ * Ahhh! A bug!
+ */
+void __bug(const char *fmt, ...)
+{
+	nvgpu_err(NULL, "BUG detected!");
+
+	__hang();
+}
+
+bool __warn(bool cond, const char *fmt, ...)
+{
+	if (!cond)
+		goto done;
+
+	nvgpu_warn(NULL, "WARNING detected!");
+
+	dump_stack();
+
+done:
+	return cond;
+}