Add a varition in common scripts to support sailfish blobs

Sailfish shares some makefiles with Marlin.
In particular BoardConfigVendor.mk and device-vendor-sailfish.mk
are inherited from device/google/marlin/marlin/BoardConfig.mk and
device/google/marlin/aosp_sailfish.mk respectively.

We need to support both devices within device/google/marlin.
Doing so is to avoid filenames collision when we uncompress the blobs.

BUG:29936685

Change-Id: I2e9ab34c6dde565ae2033885a7bd3444cee6a585
1 file changed