Fix build break

static_assert with no message is a C++17 extension

Bug: 131176903
Test: make
Change-Id: Ib3a07f5c6edee8dd1dfab3ac9d57209c920a287d
Merged-In: I156b3754d142d3903c732e1ac7e95c137302a15a
Signed-off-by: Roman Kiryanov <rkir@google.com>

system/vulkan_enc/vk_util.h

@@ -194,8 +194,8 @@ __vk_find_struct(void *start, VkStructureType sType)
 
 template <class T> void vk_is_vk_struct(T *s)
 {
-    static_assert(sizeof(s->sType) == sizeof(VkStructureType));
-    static_assert(sizeof(s->pNext) == sizeof(void*));
+    static_assert(sizeof(s->sType) == sizeof(VkStructureType), "Vulkan structures has the sType field of type VkStructureType");
+    static_assert(sizeof(s->pNext) == sizeof(void*), "Vulkan structures has the pNext field of void*");
 }
 
 template <class T, class H> T* vk_find_struct(H* head, VkStructureType sType)