board: verdin-imx8mp: change prints in spl_dram_init function

change prints to show which DDR configuration (single/dual rank) is used

Signed-off-by: Emanuele Ghidoli <emanuele.ghidoli@toradex.com>
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
1 file changed