Revert "I screwed it up"

This reverts commit 23ad6ae2d777fa99c0eba5e6669475d97d120be6.
Revert " u8815: rework all of the things"

This reverts commit 4f62930d41d5f726a5b14a8cc06c6cb18e516b70.
u8815: add libcm.so for 109808 and 2030 basebands
u8815: remove a bunch of junk blobs

Conflicts:
	u8815/proprietary/bin/bridgemgrd
	u8815/proprietary/bin/modempre
	u8815/proprietary/bin/port-bridge
	u8815/proprietary/bin/qmiproxy
	u8815/u8815-vendor-blobs.mk
Put modempre back

Never seen it running, but oem_rpc_svc seems to use it.
Fix light sensor