clk: rockchip: use clock ID for DMC (memory controller) on rk3288
clk: rockchip: use clock ID for DMC (memory controller) on rk3288

The DMC clocks need to be turned off at runtime.  Use the newly
assigned clock IDs to export them.

Signed-off-by: Jeff Chen <30a98baa2f5df4d2b11b46828763f79f9ed00ae0@rock-chips.com>
[dianders: split into two patches; adjusted commit msg]
Signed-off-by: Doug Anderson <49983c4a76b998672954ed5edf4a62db4a336502@chromium.org>
Signed-off-by: Heiko Stuebner <9ab5f52a1ca0bcf4f70d6d9008e02f6134b5b8f2@sntech.de>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs