anv: Ignore continue flag in primary cmd buffers
According to the Vulkan specification, the VK_COMMAND_BUFFER_USAGE_RENDER_PASS_CONTINUE_BIT flag will be ignored if included in a VkCommandBufferBeginInfo for a primary command buffer. This also implies pBeginInfo->pInheritanceInfo should not be read even if the flag is present, and makes it legal to include the flag knowing it will be ignored.
Signed-off-by: Ricardo Garcia rgarcia@igalia.com