init.qcom.usb.sh: Set default composition for msm8952 and msmtitanium

Set persist.sys.usb.config to diag,serial_smd,rmnet_ipa,adb so that
default composition is 9091, which has DUN and RMNET interfaces
enabled.

Change-Id: Ibd47cf8c9048ef519902bba64c2a9303d7723dea

rootdir/etc/init.qcom.usb.sh

@@ -152,6 +152,9 @@ case "$usb_config" in
                         "msm8909" | "msm8937")
                             setprop persist.sys.usb.config diag,serial_smd,rmnet_qti_bam,adb
                         ;;
+                        "msm8952" | "titanium")
+                            setprop persist.sys.usb.config diag,serial_smd,rmnet_ipa,adb
+                        ;;
                         *)
                             setprop persist.sys.usb.config diag,adb
                         ;;