ddr: altera: sequencer: Pluck out misc macros from code

Actually convert the sequencer code to use socfpga_sdram_misc_config
instead of the various macros. This is just an sed exercise here, no
manual coding needed.

This patch actually removes the need to include any board-specific
files in sequencer.c , so sequencer.c namespace is now no longer
poluted by QTS-generated macros.

Signed-off-by: Marek Vasut <marex@denx.de>
Acked-by: Dinh Nguyen <dinguyen@opensource.altera.com>