Apply __stack tag to align bluetooth defined fiber stacks

Bluetooth fibers must have their stacks properly aligned.

Change-Id: Id46b376abb46400c563050b4c8393ab3983ff045
Signed-off-by: Peter Mitsis <peter.mitsis@windriver.com>

net/bluetooth/att.c

@@ -31,6 +31,7 @@
  */
 
 #include <nanokernel.h>
+#include <arch/cpu.h>
 #include <toolchain.h>
 #include <string.h>
 #include <errno.h>

net/bluetooth/conn.c

@@ -31,6 +31,7 @@
  */
 
 #include <nanokernel.h>
+#include <arch/cpu.h>
 #include <toolchain.h>
 #include <string.h>
 #include <errno.h>

net/bluetooth/conn.h

@@ -72,7 +72,7 @@ struct bt_conn {
 
 	uint8_t			state;
 
-	char			tx_stack[BT_CONN_TX_STACK_SIZE];
+	char			__stack tx_stack[BT_CONN_TX_STACK_SIZE];
 };
 
 /* Process incoming data for a connection */

net/bluetooth/hci_core.c

@@ -31,6 +31,7 @@
  */
 
 #include <nanokernel.h>
+#include <arch/cpu.h>
 #include <toolchain.h>
 #include <string.h>
 #include <stdio.h>
@@ -65,9 +66,9 @@
 #define CMD_TX_STACK_SIZE	256
 #endif
 
-static char rx_fiber_stack[RX_STACK_SIZE];
-static char cmd_rx_fiber_stack[CMD_RX_STACK_SIZE];
-static char cmd_tx_fiber_stack[CMD_TX_STACK_SIZE];
+static char __stack rx_fiber_stack[RX_STACK_SIZE];
+static char __stack cmd_rx_fiber_stack[CMD_RX_STACK_SIZE];
+static char __stack cmd_tx_fiber_stack[CMD_TX_STACK_SIZE];
 
 #if defined(CONFIG_BLUETOOTH_DEBUG)
 static nano_context_id_t cmd_rx_fiber_id;

net/bluetooth/l2cap.c

@@ -31,6 +31,7 @@
  */
 
 #include <nanokernel.h>
+#include <arch/cpu.h>
 #include <toolchain.h>
 #include <string.h>
 #include <errno.h>

net/bluetooth/smp.c

@@ -34,6 +34,7 @@
  */
 
 #include <nanokernel.h>
+#include <arch/cpu.h>
 #include <stddef.h>
 #include <errno.h>
 #include <string.h>