D3D11: Fix register index of read-only storage images On D3D11 read-only storage images should consume SRV registers ("t") instead of UAV registers ("u"), so baseUAVRegister shouldn't be related to read-only storage images. fixed: angleproject:4404 Bug: angleproject:7121 Change-Id: I3ca35497992de599d0427fae10d750aff7cf7d9e Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4819797 Reviewed-by: Geoff Lang <geofflang@chromium.org> Commit-Queue: Geoff Lang <geofflang@chromium.org> Reviewed-by: Stephen White <senorblanco@chromium.org> Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>