bcmxcp: Remove newline on debug output for outlets
bcmxcp: Add mapping for some more meters and one more command

Add mapping for PW_SET_TIME_AND_DATE command.
Add mapping for input.bypass.voltage, input.bypass.L1-N.voltage, input.bypass.L2-N.voltage, input.bypass.L3-N.voltage.
Add mapping for input.bypass.frequency.
Add mapping for ups.power.nominal if provided as meter, it was previously only set on init.
Change mapping for ups.realpower for single phase.
Tested on Eaton PW9130.
bcmxcp: Fix handling of date and time format

The date and time bytes are packed BCD, so it must be properly decoded.
The check for the Julian or Month:Day format was wrong
Info on format taken from http://old.networkupstools.org/protocols/eaton/XCP_Rev_C1_Public_021309.pdf