[ofw] typical values for ci_umv_buf_t

[Sean Hefty]

Is it correct that the input_size and output_size for ci_umv_buf_t (see below)
are always less than a page size?  (Typically a few dozen bytes at most.)

- Sean

---

typedef struct _umv_buf
{
	uint32_t		command;
	uint32_t		status;
	uint32_t		input_size;
	uint32_t		output_size;
	void* __ptr64	p_inout_buf;
} ci_umv_buf_t;