ARM: dts: msm: Update the CCI frequency for 1.0/1.1 GHz on msm8939

Use CCI frequency of 297 MHz for 1.0/1.1 GHz performance
cluster frequencies as these are now moved under
NOM corner.

CRs-Fixed: 762377
Change-Id: I31e529897613e9d7809277436fbfe0c35c0ae5cd
Signed-off-by: Anirudh Ghayal <aghayal@codeaurora.org>