interrupt_controller: cavs: add CPU offset for intel_apl_adsp

This adds the per CPU address offset for intel_apl_adsp, so
the correct base address can be calculated under SMP.

Signed-off-by: Daniel Leung <daniel.leung@intel.com>
diff --git a/drivers/interrupt_controller/intc_cavs.c b/drivers/interrupt_controller/intc_cavs.c
index 6992c72..f3e4503 100644
--- a/drivers/interrupt_controller/intc_cavs.c
+++ b/drivers/interrupt_controller/intc_cavs.c
@@ -11,6 +11,8 @@
 #if defined(CONFIG_SMP) && (CONFIG_MP_NUM_CPUS > 1)
 #if defined(CONFIG_SOC_INTEL_S1000)
 #define PER_CPU_OFFSET(x)	(0x40 * x)
+#elif defined(CONFIG_SOC_INTEL_APL_ADSP)
+#define PER_CPU_OFFSET(x)	(0x40 * x)
 #else
 #error "Must define PER_CPU_OFFSET(x) for SoC"
 #endif