android: custom serial number patterns

Change-Id: I2723f2b50caaaf805b7e2a5e0a148a93019164bc
bbb: use default testboot_offset value

Change-Id: If1cb93c8950349d294e9177b000ccaba8748a9f6
d01: add proper boot_option stanza to device-type config

Change-Id: Iaf77a27d311a50d6b541b6e8f81483cd6018c691