arc: move interrupt controller to drivers/

Change-Id: I731c99062f4b5d2d4d1eb6a3c546ed5f3e494fa4
Signed-off-by: Anas Nashif <anas.nashif@intel.com>

arch/arc/Makefile

@@ -1,7 +1,6 @@
 obj-y = core/
 obj-y += bsp/
 obj-y += timer/
-obj-y += interrupt_controller/
 obj-$(CONFIG_NSIM) += serial/
 obj-y += timer/
 

arch/arc/interrupt_controller/Makefile

@@ -1,5 +0,0 @@
-ccflags-y +=-I$(srctree)/arch/arc/$(strip $(CONFIG_BSP_DIR))
-asflags-y +=-I$(srctree)/arch/arc/$(strip $(CONFIG_BSP_DIR))
-
-
-obj-y += arcv2_irq_unit.o

drivers/interrupt_controller/Kconfig

@@ -48,9 +48,19 @@ config LOAPIC
 config  IOAPIC
 	bool "IOAPIC"
 	default n
-         depends on X86_32
+        depends on X86_32
 	help
 	This option signifies that the target has an IO-APIC device. This
 	capability allows IO-APIC-dependent code to be included.
 
+config ARCV2_INTERRUPT_UNIT
+	bool "ARCv2 Interrupt Unit"
+	default y
+	depends on ARC
+	help
+	The ARCv2 interrupt unit has 16 allocated exceptions associated with
+	vectors 0 to 15 and 240 interrupts associated with vectors 16 to 255.
+	The interrupt unit is optional in the ARCv2-based processors. When
+	building a processor, you can configure the processor to include an
+	interrupt unit. The ARCv2 interrupt unit is highly programmable.
 endmenu

drivers/interrupt_controller/Makefile

@@ -11,3 +11,4 @@ obj-$(CONFIG_LOAPIC) += system_apic.o
 obj-$(CONFIG_LOAPIC) += loapic_intr.o
 obj-$(CONFIG_IOAPIC) += ioapic_intr.o
 
+obj-$(CONFIG_ARCV2_INTERRUPT_UNIT) += arcv2_irq_unit.o