ARM: dts: msm: Change modem region to 85MB for msm8939

Increase the modem region to 85MB for msm8939 as
modem flavor has changed and memory requirement
has increased to support this modem. Also
correspondingly move peripheral region carveout.

Change-Id: Ief723d806c90d886b32e9aae38881fb1b2a89a9a
Signed-off-by: Susheel Khiani <skhiani@codeaurora.org>