mei: hbm: send immediate reply flag in enum request

Signal the FW that it can send an HBM enumeration answer immediately,
without waiting for FW initialization completion, meaning before
all the FW clients are ready and registered.

Organize enumeration response options to enum as a byproduct.

Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>