soc/rockchip/rk3288: Add missing break statement

To break, or not to break, that is the question.
  -- Hamlet, probably

The case statement for INIT_MEM does not have a break, and so falls
through to the one for CONF. Is this intentional, or is it a mistake?
Well, it doesn't completely matter, since if a break were added the
state would be CONF on the next iteration of the while loop, and so it
would execute the CONF case anyway. Let's add a break statement to be
consistent with the rest of the cases.

Change-Id: I1d0cfea07211c54d6a906f5a7481c2c760f8ef0d
Signed-off-by: Jacob Garber <jgarber1@ualberta.ca>
Found-by: Coverity CID 1291959
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M src/soc/rockchip/rk3288/sdram.c
1 file changed, 1 insertion(+), 0 deletions(-)