include: Rename vkLayer.h -> vk_layer.h and vkIcd.h -> vk_icd.h
diff --git a/icd/intel/intel.h b/icd/intel/intel.h
index 3a97b3d..88ea971 100644
--- a/icd/intel/intel.h
+++ b/icd/intel/intel.h
@@ -37,7 +37,7 @@
 #include <assert.h>
 
 #include <vulkan.h>
-#include <vkIcd.h>
+#include <vk_icd.h>
 
 #include "icd.h"
 #include "icd-spv.h"