Vulkan: Take base level into account in image views Similarly to how max level changes are handled, this change also handles base level changes. In either case, the old views are retained and new views are created for the [base, max] level range. Test provided by m.maiya@samsung.com Bug: angleproject:6967 Test: MipmapTestES31.UpdateBaseLevel/* Change-Id: Iee8b2f035c1cc0fa916b987a91939b8ae65d27c5 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3441074 Reviewed-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: mohan maiya <m.maiya@samsung.com> Reviewed-by: Shahbaz Youssefi <syoussefi@google.com> Commit-Queue: Shahbaz Youssefi <syoussefi@google.com>