ARM: dts: imx31: move CCM device node to AIPS2 bus devices

i.MX31 Clock Control Module controller is found on AIPS2 bus, move it
there from SPBA bus to avoid a conflict of device IO space mismatch.

Fixes: ef0e4a60 ("ARM: mx31: Replace clk_register_clkdev with clock DT lookup")
Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>