rambi: configure the LPE audio codec clock

Rambi has the LPE audio codec connected to PMC_PLT_CLK[0].
Configure it for 25MHz.

BUG=chrome-os-partner:23791
BRANCH=None
TEST=Built and booted. Noted message in console output.

Change-Id: I11297ba951149e5831c65ca70ac7bdbbed113098
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/178781
Reviewed-by: Shawn Nematbakhsh <shawnn@chromium.org>
1 file changed