radv: fix format feature reporting for modifiers

radv: fix format feature reporting for modifiers

The format_feature_flags bitfield is derived from the modifier if
the tiling is set to VK_IMAGE_TILING_DRM_FORMAT_MODIFIER_EXT.
However radv will reset the tiling to either LINEAR or OPTIMAL if
the caller supplied a VkPhysicalDeviceImageDrmFormatModifierInfoEXT
in the chain.

Stop resetting the tiling, so that we can compute the correct feature
flags.

Signed-off-by: Simon Ser <contact@emersion.fr>
Fixes: 6c83e3ea98b7 ("radv: Add format modifier format queries.")
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/9978>