[edn/rtl] check enable in edn main fsm
[edn/rtl] check enable in edn main fsm

The main edn state machine does not look at the enable input
for all waiting states.
If the module is disabled by reseting the enable field, this
state main will continue to hang.

Signed-off-by: Mark Branstad <d7ca710cc6ec5dc810c866dae5369b19445fbeef@wdc.com>

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