omap4-common: add custom libril

Change-Id: Ifa8fb5588a4d3ea2db462cb6e838c13fa841ee58
omap4-common: fix getting preferred network type

NETWORK_MODE_GLOBAL => NETWORK_MODE_WCDMA_PREF

Change-Id: If7c35ca1d52f6f151733c5c0463401b7725aed3e