hdl/ip_cores/dsp-cores: update submodule reference
hdl/modules/*/wb_ethmac_adapter/*: update to new etherbone core

The xwb_ethmac_adapter component uses compoenents from
the Etherbone core. As its naming has changed a while ago,
we need to update the components interfaces here
hdl/modules/fmc_adc_common/*: fix 7SERIES idelay primitives

For 7SERIES FPGAs, the iodelay primitive has beed updated to
idelaye2. So, we add a differente generate for these FPGAs
hdl/modules/*: add g_delay_type on FMC ADC modules

Exposed the idelay type desired to user. This brings flexibility
on selecting the different delay types for different FPGA devices