fix(zynqmp): add bitmask for get_op_char API

fix(zynqmp): add bitmask for get_op_char API

As per the current functionality, there are a couple of types like
PM_OPCHAR_TYPE_TEMP, PM_OPCHAR_TYPE_POWER and PM_OPCHAR_TYPE_LATENCY
for the PM_GET_OP_CHARACTERISTIC EEMI API which is mismatched across
the Versal and ZynqMP platforms.

So added the bitmask functionality for PM_GET_OP_CHARACTERISTIC API
in feature check in the firmware and as part of that the firmware fill
up payload[1] with the bitmask value of supported types of the
PM_GET_OP_CHARACTERISTIC EEMI API but from TF-A based on the current
codebase it is just returning the version. So filling up the bitmask
buffer which is received from the firmware and returned the same to
the user.

Signed-off-by: Ronak Jain <ronak.jain@amd.com>
Change-Id: I2c55f3e902a5f89eed899e99a97ad9b3f0a12796