Get UA and UAProfUrl from Carrier Config First

Some carriers require customized UA and UAProfUrl in a specified
format, which is different from the default configuration of OEM.
Therefore, first get the MMS User Agent from Carrier Config.

Signed-off-by: Guoqiang.Qiu <guoqiang.qiu@tcl.com>
Change-Id: I70395611d8578a8aff0af183fed600abde7407ef
1 file changed