nvk/image: fix image align and size constraints.

In order to use compressed images we have to align to at least (1<<16)
though the kernel also likes (1<<21).

This fixes the alignments/sizes so they can work with vm allocs

src/nouveau/nil/nil_image.c

@@ -439,6 +439,11 @@ nil_image_init(struct nouveau_ws_device *dev,
    image->pte_kind = nil_choose_pte_kind(dev, info->format, info->samples,
                                          true /* TODO: compressed */);
 
+   image->align_B = MAX2(image->align_B, 4096);
+   if (image->pte_kind >= 0xb && image->pte_kind <= 0xe)
+      image->align_B = MAX2(image->align_B, (1 << 16));
+
+   image->size_B = ALIGN(image->size_B, image->align_B);
    return true;
 }
 

src/nouveau/vulkan/nvk_image.c

@@ -352,8 +352,9 @@ nvk_GetImageMemoryRequirements2(VkDevice _device,
    uint32_t memory_types = (1 << device->pdev->mem_type_cnt) - 1;
 
    // TODO hope for the best?
+
    pMemoryRequirements->memoryRequirements.memoryTypeBits = memory_types;
-   pMemoryRequirements->memoryRequirements.alignment = 0x1000;
+   pMemoryRequirements->memoryRequirements.alignment = image->nil.align_B;
    pMemoryRequirements->memoryRequirements.size = image->nil.size_B;
 
    vk_foreach_struct_const(ext, pMemoryRequirements->pNext) {