zpu: proper reg map
zpu: fixes
zpu/host: tame the packet router
host: fix indent
zpu:udp uarts-- due to tx1
host: minor fixes
host: fix iq correction
host: expose RX VGA1 gain
host: fix indentation
zpu: mask the unused upper bits for spi transfers < 32bit
host: Set an even sample rate decimation by default to avoid annoying warnings.
host: remove unused files
host/zpu: update the reg map
host: minor cleanup
host: make the spi base address configurable for fifo_ctrl