imx: mx6q DDR3 init: Fix MR0.PPD

MR0.PPD should be set as in MMDCx_MDPDC.SLOW_PD, i.e. to fast-exit mode, which
is encoded as 1 in MRS.LMR.MR0.A12 and MMDCx_MDSCR[28].

Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
1 file changed