feat(imx952): add CRRM support

Keep wakeupmix on during system sleep to avoid XSPI setting
lost. User need to set IMX_CRRM=1 in build option.

Signed-off-by: Ye Li <ye.li@nxp.com>
Signed-off-by: Jacky Bai <ping.bai@nxp.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Change-Id: I012e32a2ce1b3a06ba2816f6a0d0e5f9b7747e7c