Remove CONFIG_TLS

A first step in implementing the user-space error is force TLS to be enabled at all times.  It is no longer optional

include/nuttx/arch.h

@@ -1695,14 +1695,12 @@ int up_timer_start(FAR const struct timespec *ts);
  *
  ****************************************************************************/
 
-#ifdef CONFIG_TLS
 /* struct tls_info_s;
  * FAR struct tls_info_s *up_tls_info(void);
  *
  * The actual declaration or definition is provided in arch/tls.h.  The
  * actual implementation may be a MACRO or and inline function.
  */
-#endif
 
 /****************************************************************************
  * Multiple CPU support

include/nuttx/tls.h

@@ -29,8 +29,6 @@
 
 #include <sys/types.h>
 
-#ifdef CONFIG_TLS
-
 /****************************************************************************
  * Pre-processor Definitions
  ****************************************************************************/
@@ -148,5 +146,4 @@ void tls_set_element(int elem, uintptr_t value);
 FAR struct tls_info_s *tls_get_info(void);
 #endif
 
-#endif /* CONFIG_TLS */
 #endif /* __INCLUDE_NUTTX_TLS_H */