rmnet_usb: Change noisy pr_infos to dev_dbg

 * Shut yer mouth!

Change-Id: I8b3eee9a5c3ee4830f7f7e749424c4e7b34db192
ion: Fix the compatibility version  of ion_alloc

Change-Id: I2d0f679e239fa5ad6955f23d4be0644732bc7a8b