Moves below DDR specific defines to Kconfig:

CONFIG_FSL_DDR_BIST
CONFIG_FSL_DDR_FIRST_SLOT_QUAD_CAPABLE
CONFIG_FSL_DDR_INTERACTIVE
CONFIG_FSL_DDR_SYNC_REFRESH
Signed-off-by: NRajesh Bhagat <rajesh.bhagat@nxp.com>
Reviewed-by: NYork Sun <york.sun@nxp.com>
Reviewed-by: NPrabhakar Kushwaha <prabhakar.kushwaha@nxp.com>