The CDS uses PCICLK as SYSCLK. The PCICLK should be 33333333Hz or 66666666Hz.

Signed-off-by: Ebony Zhu <ebony.zhu@freescale.com>
Signed-off-by: Zhao Chenhui <chenhui.zhao@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>