CL/Vulkan: Set storage buffer usage for cl buffers clspv is setting all the buffer objects as storage buffers, so removing the distinction on the CL MEM flags for now. Bug: angleproject:365694588 Change-Id: I3bd65457d53a6a2fb5fd5c8f2a0b8c25094ed563 Signed-off-by: Gowtham Tammana <g.tammana@samsung.com> Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/5916158 Reviewed-by: Geoff Lang <geofflang@chromium.org> Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org> Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>