Bluetooth: controller: Move ll.h to an include folder

To present a common interface to both software and hardware Link Layers
the API in ll.h now lives in its own separate include/ folder.

Change-Id: I2b0ab0d11b47b9c35a5759bcc30f347e6c616648
Signed-off-by: Carles Cufi <carles.cufi@nordicsemi.no>

subsys/bluetooth/controller/Makefile

@@ -1,7 +1,8 @@
 ccflags-$(CONFIG_BLUETOOTH_LL_SW) += -I$(srctree)/subsys/bluetooth/controller/util
 ccflags-$(CONFIG_BLUETOOTH_LL_SW) += -I$(srctree)/subsys/bluetooth/controller/hal
 ccflags-$(CONFIG_BLUETOOTH_LL_SW) += -I$(srctree)/subsys/bluetooth/controller/ticker
-ccflags-$(CONFIG_BLUETOOTH_LL_SW) += -I$(srctree)/subsys/bluetooth/controller/ll
+ccflags-$(CONFIG_BLUETOOTH_LL_SW) += -I$(srctree)/subsys/bluetooth/controller/ll_sw
+ccflags-$(CONFIG_BLUETOOTH_LL_SW) += -I$(srctree)/subsys/bluetooth/controller/include
 obj-$(CONFIG_BLUETOOTH_LL_SW) += util/mem.o
 obj-$(CONFIG_BLUETOOTH_LL_SW) += util/memq.o
 obj-$(CONFIG_BLUETOOTH_LL_SW) += util/mayfly.o
@@ -11,7 +12,6 @@ obj-$(CONFIG_BLUETOOTH_LL_SW) += hal/nrf5/rand.o
 obj-$(CONFIG_BLUETOOTH_LL_SW) += hal/nrf5/ecb.o
 obj-$(CONFIG_BLUETOOTH_LL_SW) += hal/nrf5/radio.o
 obj-$(CONFIG_BLUETOOTH_LL_SW) += ticker/ticker.o
-obj-$(CONFIG_BLUETOOTH_LL_SW) += ll/ctrl.o
-obj-$(CONFIG_BLUETOOTH_LL_SW) += ll/ll.o
+obj-$(CONFIG_BLUETOOTH_LL_SW) += ll_sw/
 obj-$(CONFIG_BLUETOOTH_CONTROLLER) += hci/hci_driver.o
 obj-$(CONFIG_BLUETOOTH_CONTROLLER) += hci/hci.o

subsys/bluetooth/controller/hci/hci_driver.c

@@ -41,10 +41,10 @@
 #include "hal/cntr.h"
 #include "hal/cpu.h"
 #include "ticker/ticker.h"
-#include "ll/pdu.h"
-#include "ll/ctrl.h"
-#include "ll/ctrl_internal.h"
-#include "ll/ll.h"
+#include "ll_sw/pdu.h"
+#include "ll_sw/ctrl.h"
+#include "ll_sw/ctrl_internal.h"
+#include "ll.h"
 #include "hci_internal.h"
 
 #include "hal/debug.h"

subsys/bluetooth/controller/ll_sw/Makefile

@@ -0,0 +1,6 @@
+ccflags-$(CONFIG_BLUETOOTH_LL_SW) += -I$(srctree)/subsys/bluetooth/controller/util
+ccflags-$(CONFIG_BLUETOOTH_LL_SW) += -I$(srctree)/subsys/bluetooth/controller/hal
+ccflags-$(CONFIG_BLUETOOTH_LL_SW) += -I$(srctree)/subsys/bluetooth/controller/ticker
+ccflags-$(CONFIG_BLUETOOTH_LL_SW) += -I$(srctree)/subsys/bluetooth/controller/include
+obj-$(CONFIG_BLUETOOTH_LL_SW) += ctrl.o
+obj-$(CONFIG_BLUETOOTH_LL_SW) += ll.o