module_common: print loss / fault signals as bool

JSON output is supposed to be easy to parse. We currently
output "Yes" / "No" for the per-lane signal loss / fault.
This forces user space to do string matching. Print bool.

Before:
  "rx_loss_of_signal": ["No", "No", "No", "No"],

After:
  "rx_loss_of_signal": [false, false, false, false],

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>