uboot-imx

ddr: altera: Staticize global variables

Just staticize global variables in sequencer, since there is no
point in having these symbols available outside of the DDR code.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Dinh Nguyen <dinguyen@opensource.altera.com>
Cc: Chin Liang See <clsee@altera.com>