[INKA4x0] NG hardware: SDRAM support

Add support for three new DDR chips that may  be present on a NG
INKA4x0 hardware: HYB25D512160BF-5, K4H511638C-7CB3, T46V32M16BN-6IT.

Cleanup board/inka4x0/mt48lc16m16a2-75.h file.

Signed-off-by: Marian Balakowicz <m8@semihalf.com>
7 files changed