ARM: dts: msm: enable HS400 for msm8994 cdp

MSM8994 HS400 issues with cdp has been resolved. It turned out to be
a missing register write that sets up the dll to track the command
line. When this was missing, the commands without data phase would
experience communication errors since the dll does not allow the
sdhc core to sample the data at the correct place.

Change-Id: Iacc2a5257d03c7766043c680c1c2f36bbcc6de82
Signed-off-by: Krishna Konda <kkonda@codeaurora.org>