ANDROID: GKI: Fix block/genhd.c exports from having their CRC changed

Commit aa07e56c ("block: fix blktrace debugfs entries leakage")
added a new #include line, which ends up dragging in more structures
which changes the CRC abi for all functions exported in bloc/genhd.c

Fix this up by only including that file if the CRC checker is not being
run at the moment, preserving the CRC properly

Bug: 161946584
Fixes: aa07e56c ("block: fix blktrace debugfs entries leakage")
Change-Id: I46aa843c28f36c9ac1d83fc28e80b25ba757ff4c
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>