Bluetooth: controller: Fast enc setup with ccflags -Ofast

To meet CPU time usage restricts inside radio ISR on nRF51
SoCs, use ccflags -Ofast when using fast encryption setup
implementation in the controller.

Signed-off-by: Vinayak Kariappa Chettimada <[email protected]>

Author: cvinayak

subsys/bluetooth/controller/hal/nrf5/Makefile

@@ -1,4 +1,6 @@
 ccflags-y += -I$(srctree)/subsys/bluetooth/controller
 ccflags-y += -I$(srctree)/subsys/bluetooth
 
+ccflags-$(CONFIG_BT_CTLR_FAST_ENC) += -Ofast
+
 obj-y += cntr.o ecb.o radio.o rand.o

subsys/bluetooth/controller/ll_sw/Makefile

@@ -2,6 +2,8 @@ ccflags-y += -I$(srctree)/subsys/bluetooth/controller/include
 ccflags-y += -I$(srctree)/subsys/bluetooth/controller
 ccflags-y += -I$(srctree)/subsys/bluetooth
 
+ccflags-$(CONFIG_BT_CTLR_FAST_ENC) += -Ofast
+
 obj-y += crypto.o ctrl.o ll.o ll_filter.o
 obj-$(CONFIG_BT_BROADCASTER) += ll_adv.o
 obj-$(CONFIG_BT_OBSERVER)    += ll_scan.o