Vulkan: Ignore VK_INCOMPLETE from vkGetPipelineCacheData From vkGetPipelineCacheData(3) Manual Page: If pDataSize is less than the maximum size that can be retrieved by the pipeline cache, at most pDataSize bytes will be written to pData, and vkGetPipelineCacheData will return VK_INCOMPLETE. Any data written to pData is valid and can be provided as the pInitialData member of the VkPipelineCacheCreateInfo structure passed to vkCreatePipelineCache. Bug: angleproject:3988 Test: CQ, CtsOpenGLTestCases Change-Id: I34589ee3c9e27839a9cd0168b4a2186f4cbb255e Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1854680 Commit-Queue: Tim Van Patten <timvp@google.com> Reviewed-by: Tobin Ehlis <tobine@google.com>