linux-wandboard

MLK-16992-2: drm: imx: dcss: enable/disable all clocks during suspend/resume

Clocks were not properly disabled during suspend. This patch will
disable all clocks during suspend.

Also, remove the hardcoded clocks' rates. These will be set through DTB.

Signed-off-by: Laurentiu Palcu <laurentiu.palcu@nxp.com>