init.qcom.usb.sh: Start embedded rmnet data driver for APQ8064 AU

This allows apq to start embedded rmnet data driver for external
modem.

Change-Id: Id7b433e4af7a88838bbf8a676034edc5814c006b
init.qcom.usb.sh: Enable usb composition with mdm diag

mdm diag is required to communicate with modem via diagnostic
tools.

Change-Id: I8dfe488e943f91faeb07886ca67d29506d6dda21
Merge "init.qcom.usb.sh: Start embedded rmnet data driver for APQ8064 AU"
Merge "init.qcom.usb.sh: Enable usb composition with mdm diag"