QE: ls1043a: modify CONFIG_SYS_QE_FW_ADDR to (512*4A00) in SD Card

Due to the new layout of Layerscape series, move the QE
firmware to address (512*4A00) in SD Card.

Signed-off-by: Zhao Qiang <qiang.zhao@nxp.com>
Reviewed-by: Prabhakar Kushwaha <prabhakar.kushwaha@nxp.com>