anv: add missing ISL storage usage

ISL makes a bunch of decision on programming (MOCS,
RENDER_SURFACE_STATE values) based on this flag. It's important to set
it if we're going to use an image as storage.

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Cc: mesa-stable
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Nanley Chery <nanley.g.chery@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23620>

src/intel/vulkan/anv_image.c

@@ -214,6 +214,9 @@ choose_isl_surf_usage(VkImageCreateFlags vk_create_flags,
    if (vk_usage & VK_IMAGE_USAGE_INPUT_ATTACHMENT_BIT)
       isl_usage |= ISL_SURF_USAGE_TEXTURE_BIT;
 
+   if (vk_usage & VK_IMAGE_USAGE_STORAGE_BIT)
+      isl_usage |= ISL_SURF_USAGE_STORAGE_BIT;
+
    if (vk_usage & VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT)
       isl_usage |= ISL_SURF_USAGE_RENDER_TARGET_BIT;