msm: acpuclock-8064: Lower max L2 speed to 1134MHz

There are some testing showing that L2 at 1188MHz may cause
some stability issue. Lower the max speed to 1134Mhz until
the root cause is found.

Change-Id: I327c33c72ea0327e269d7839fadfb25ac715408b
Signed-off-by: Tianyi Gou <tgou@codeaurora.org>