Get first data read.

Signed-off-by: Tom Levens <tom.levens@cern.ch>

Move user CR/CSR space to VME64xCore_Top with generic to enable/disable
it. Standardise generic default values between VME64xCore_Top and
xvme64x_core.
Signed-off-by: Tom Levens <tom.levens@cern.ch>

Signed-off-by: Tom Levens <tom.levens@cern.ch>

Implements DFS feature and FAF in CR/CSR. Note that the DFS is still
interpreted incorrectly by the function decoders.
Signed-off-by: Tom Levens <tom.levens@cern.ch>

Create a port (rst_n_o) on the top level component which is the
combination of the HW resets (rst_n_i and VME_RST_n_i) and the SW reset
bit coming from the CR/CSR.
Signed-off-by: Tom Levens <tom.levens@cern.ch>

Remove duplicate registers for all main FSM signals.
Signed-off-by: Tom Levens <tom.levens@cern.ch>

Assign explicit values to s_XAM, s_phase1addr & s_phase2addr. Remove
unused signal s_func_sel.
Signed-off-by: Tom Levens <tom.levens@cern.ch>