arch/xtensa: Fix a build issue.
1. Add g_idle_topstack to fix a build issue.
2. Fix the path description in nuttx licence.
******************************************************************/
/****************************************************************************
- * arch/xtensa/src/xtensa/esp32_start.c
+ * arch/xtensa/src/esp32/esp32_start.c
*
* Copyright (C) 2016 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
uint32_t g_idlestack[IDLETHREAD_STACKWORDS]
__attribute__((aligned(16) section(".noinit")));
+const uint32_t g_idle_topstack = (uint32_t)(g_idlestack + IDLETHREAD_STACKWORDS);
+
/****************************************************************************
* Public Functions
****************************************************************************/
