include: move interrupt controller headers to interrupt_controller/

Move internal and architecture specific headers from include/drivers to
subfolder for interrupt_controller:

include/drivers/interrupt_controller/

Signed-off-by: Anas Nashif <anas.nashif@intel.com>
diff --git a/drivers/interrupt_controller/loapic_intr.c b/drivers/interrupt_controller/loapic_intr.c
index 4334e70..f56113f 100644
--- a/drivers/interrupt_controller/loapic_intr.c
+++ b/drivers/interrupt_controller/loapic_intr.c
@@ -17,9 +17,9 @@
 
 #include <toolchain.h>
 #include <linker/sections.h>
-#include <drivers/loapic.h> /* public API declarations */
+#include <drivers/interrupt_controller/loapic.h> /* public API declarations */
 #include <init.h>
-#include <drivers/sysapic.h>
+#include <drivers/interrupt_controller/sysapic.h>
 
 /* Local APIC Version Register Bits */