Move libboot_control to boot_control 1.1

It should belong to the default /misc implementation of boot control
1.1. Right now, the library as well as the bootloader_message_ab
are only used by cuttlefish. So move it over to reduce the confusion
in libbootloader_message.

Bug: 131775112
Test: build
Change-Id: I599678bf90d19718de811b9e34d82cf8fe1571a4