IMS-VT: Add IMS permission to the Dialer application.

Add IMS permission to the Dialer application.

Change-Id: I15653a9ff1026b3eae378285f0d1b7b37adbff46
CRs-Fixed: 615689
Merge branch 'cm-11.0' of https://github.com/CyanogenMod/android_packages_apps_Dialer into cm-11.0
Merge branch 'cm-11.0' of https://github.com/temasek/android_packages_apps_Dialer into HEAD