TODO(https://fxbug.dev/42108078)
#include <zircon/syscalls.h> zx_status_t zx_vmo_create_contiguous(zx_handle_t bti, size_t size, uint32_t alignment_log2, zx_handle_t* out);
TODO(https://fxbug.dev/42108078)
bti must be of type ZX_OBJ_TYPE_BTI and have ZX_RIGHT_MAP.
TODO(https://fxbug.dev/42108078)
TODO(https://fxbug.dev/42108078)