Enable rmnet0 on the cuttlefish auto device.

All changed lines were taken from shared/phone/device.mk.

Unfortunately, even with this change there is only a
VIRTUAL_DEVICE_BOOT_COMPLETED message after manually clicking through
the auto installer flow. The message comes after hitting the final "Done."

During the time that it is stuck, logcat produces:
VIRTUAL_DEVICE_BOOT_PENDING: Connectivity

However, after going through the install flow the network is available and
reported as 4G on the top bar.

Bug: 110720387
Test: Ran cf_x86_64_auto-userdebug locally.
Change-Id: I17fb5caf22760fd8a0ffcfff699f459cf4fa01fb
Merged-In: I17fb5caf22760fd8a0ffcfff699f459cf4fa01fb
(cherry picked from commit 683b2b548c94ef8441c8662bcafbc71ce05173a3)
1 file changed