ARM: dts: msm: adjust mdp ot limits for msmcobalt

This change adjusts the ot limits in the mdp vbif
for msmcobalt by removing the xin ot limits and
adding the axi ot limits to the mdp vbif.

CRs-Fixed: 1040746
Change-Id: I365976021dcf02fbc3687091371d7d72cb711605
Signed-off-by: Ingrid Gallardo <ingridg@codeaurora.org>