mfd: rk808: add rk808-clkout mfd cell for rk805

support rk805 two clk output,xin32k and rk805-clkout2.

Change-Id: If4f820f53feaf6ab2804f4acd0cce925667b7bc0
Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>

drivers/mfd/rk808.c

@@ -401,6 +401,7 @@ static struct regmap_irq_chip rk805_irq_chip = {
 };
 
 static const struct mfd_cell rk805s[] = {
+	{ .name = "rk808-clkout", },
 	{ .name = "rk818-regulator", },
 	{ .name = "rk8xx-gpio", },
 	{