MLK-18357-1: drm/imx: Add no_clk_reset property

MLK-18357-1: drm/imx: Add no_clk_reset property

Remove the NO_CLK_RESET define and add a property for this.
On some platforms, like the i.MX8M, the Display Controller is not
completely powered off during suspend, just stopped. Since there are
problems if we stop the clocks in DSI sub-system, while the Display
Controller is still powered on, the display clocks will get out of sync.
Adding this new property to specify, on such platforms, not to reset the
clocks.

Signed-off-by: Robert Chiras <robert.chiras@nxp.com>