lavapipe: use common tracked size and override if needed

For lavapipe, there's no need for a separate internally tracked size.

Reviewed-by: Konstantin Seurer <konstantin.seurer@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36252>

src/gallium/frontends/lavapipe/lvp_android.c

@@ -129,7 +129,7 @@ lvp_import_ahb_memory(struct lvp_device *device, struct lvp_device_memory *mem)
    if (!result)
       return VK_ERROR_INVALID_EXTERNAL_HANDLE;
 
-   mem->size = size;
+   mem->vk.size = size;
    mem->map = device->pscreen->map_memory(device->pscreen, mem->pmem);
    mem->memory_type = LVP_DEVICE_MEMORY_TYPE_DMA_BUF;
 

src/gallium/frontends/lavapipe/lvp_device.c

@@ -1931,7 +1931,7 @@ set_mem_priority(struct lvp_device_memory *mem, int priority)
       if (priority > 0)
          advice |= MADV_WILLNEED;
       if (advice)
-         madvise(mem->map, mem->size, advice);
+         madvise(mem->map, mem->vk.size, advice);
    }
 #endif
 }
@@ -1992,7 +1992,6 @@ VKAPI_ATTR VkResult VKAPI_CALL lvp_AllocateMemory(
 
    mem->memory_type = LVP_DEVICE_MEMORY_TYPE_DEFAULT;
    mem->backed_fd = -1;
-   mem->size = pAllocateInfo->allocationSize;
 
    if (mem->vk.host_ptr) {
       mem->mem_alloc = (struct llvmpipe_memory_allocation) {
@@ -2032,7 +2031,7 @@ VKAPI_ATTR VkResult VKAPI_CALL lvp_AllocateMemory(
          close(import_info->fd);
       }
 
-      mem->size = size;
+      mem->vk.size = size;
       mem->map = device->pscreen->map_memory(device->pscreen, mem->pmem);
       mem->memory_type = dmabuf ? LVP_DEVICE_MEMORY_TYPE_DMA_BUF : LVP_DEVICE_MEMORY_TYPE_OPAQUE_FD;
    }

src/gallium/frontends/lavapipe/lvp_private.h

@@ -244,7 +244,6 @@ struct lvp_device_memory {
    struct pipe_memory_allocation *pmem;
    struct llvmpipe_memory_allocation mem_alloc;
    VkDeviceSize                                 map_size;
-   VkDeviceSize                                 size;
    void *                                       map;
    enum lvp_device_memory_type memory_type;
    int                                          backed_fd;