ARM: dts: msm: fix ipa clock name for mdmcalifornium

Update IPA node to map the correct IPA clock.
This is done to avoid IPA clock gating on AP suspend.

Change-Id: If32939c1f77ab7cfe7da8fa7dc79996c982bd7b8
CRs-Fixed: 979402
Acked-by: Ady Abraham <adya@qti.qualcomm.com>
Signed-off-by: Skylar Chang <chiaweic@codeaurora.org>