rcar_gen3: drivers: ddr-a: Unify register definitions

Unify boot_init_dram_regdef_*.h into boot_init_dram_regdef.h and
clean up it's coding style a bit.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Change-Id: Iae3375969c05f80209ebf7b1ebc3633a7f6317ff
7 files changed