Add the new android kernel path to includes.

The android kernel only files are now in bionic/libc/kernel/android. Add
this include directory to pick up the usb kernel header.

Bug: 30072483
Change-Id: Ib156406b3b99c366bf88942e21f3ca280c0b0713
diff --git a/apps/cts-usb-accessory/Android.mk b/apps/cts-usb-accessory/Android.mk
index f3a7ebd..7699b1a 100644
--- a/apps/cts-usb-accessory/Android.mk
+++ b/apps/cts-usb-accessory/Android.mk
@@ -28,6 +28,7 @@
 
 LOCAL_C_INCLUDES += \
 	bionic/libc/kernel/uapi \
+	bionic/libc/kernel/android/uapi \
 	bionic/libc/kernel/uapi/asm-x86 \
 
 LOCAL_STATIC_LIBRARIES := libusbhost libcutils