nb/intel/i440bx: Add final newline to raminit.c

The newline lint check just went in, and immediately broke the build
due to a commit that went in earlier today.
This fixes the build.

Change-Id: Ic4ba8ce0c8085861bc6c654afdee3fea9f4621fc
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://review.coreboot.org/20754
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>

src/northbridge/intel/i440bx/raminit.c

@@ -986,4 +986,4 @@ void sdram_initialize(void)
 	sdram_set_registers();
 	sdram_set_spd_registers();
 	sdram_enable();
-}
+}