vulkan/context: fix features normalization

Connect the correct normalized feature chain to VkDeviceCreateInfo.
Also, add the missing api_ver to ensure that normalization doesn't add
EXT structs when they are not necessary.

This fixes validation errors related to mismatches between
ppEnabledExtensionNames and the feature structs in the chain.

src/vulkan/context.c

@@ -1261,7 +1261,7 @@ static bool device_init(struct vk_ctx *vk, const struct pl_vulkan_params *params
 
     // Construct normalized output chain
     vk->features.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_FEATURES_2;
-    vk_features_normalize(vk->alloc, &features, 0, &vk->features);
+    vk_features_normalize(vk->alloc, &features, vk->api_ver, &vk->features);
     if (!check_required_features(vk)) {
         PL_FATAL(vk, "Vulkan device does not support all required features!");
         goto error;
@@ -1285,7 +1285,7 @@ static bool device_init(struct vk_ctx *vk, const struct pl_vulkan_params *params
 
     VkDeviceCreateInfo dinfo = {
         .sType = VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO,
-        .pNext = &features,
+        .pNext = &vk->features,
         .pQueueCreateInfos = qinfos.elem,
         .queueCreateInfoCount = qinfos.num,
         .ppEnabledExtensionNames = vk->exts.elem,