module: allow a selected list of PID/CID registers to compare

Certain peripherals have only a partial set of valid PID and CID
identification registers. On such peripherals, the PID and CID
register address offsets remain the same even though only a partial
set of registers are valid. Reading the invalid PID/CID registers
lead to a implementation specific behaviour. For example, such reads
could cause bus aborts.

In preparation towards restricting the expected PID/CID register value
comparison to only the valid registers, allow the modules to specify
the list of PID/CID registers to be compared as a bit map.

Signed-off-by: Thomas Abraham <thomas.abraham@arm.com>
Change-Id: Iec9e6e36e96ea429ad727ad53ffc17379395abc5