Resolve module bitness for target-host required modules

Add select-bitness-of-target-host-required-modules that resolves module
bitness for TARGET_REQUIRED_FROM_HOST and HOST_REQUIRED_FROM_TARGET.
Also re-indent select-bitness-of-required-modules.

Bug: 7456955
Test: TH
Test: compare value of ALL_MODULES.<*>.*_REQUIRED_FROM_*
Change-Id: I9483685d8dd528cb1a4ef1e2ec53cbe2caa598a4