cma_init_reserved_mem
rc = cma_init_reserved_mem(base, size, 0, "fadump_cma", &fadump_cma);
extern int cma_init_reserved_mem(phys_addr_t base, phys_addr_t size,
err = cma_init_reserved_mem(rmem->base, rmem->size, 0, rmem->name, &cma);
ret = cma_init_reserved_mem(base, size, order_per_bit, name, res_cma);