OpenOCD: Update config syntax

[RoanR]

Update OpenOCD Config files to remove deprecated syntax.

This stops error messages such as:

DEPRECATED! use 'adapter speed' not 'adapter_khz'
DEPRECATED! use 'adapter driver' not 'interface'
DEPRECATED! use 'ftdi vid_pid' not 'ftdi_vid_pid'
DEPRECATED! use 'ftdi channel' not 'ftdi_channel'
DEPRECATED! use 'ftdi layout_init' not 'ftdi_layout_init'
DEPRECATED! use 'ftdi layout_signal' not 'ftdi_layout_signal'

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[JeanRochCoulon]

Thanks for your interest for cva6 ! @dassheladiya do you approve this PR ?

[RoanR]

Is there any updates on this please? @JeanRochCoulon @dassheladiya

[JeanRochCoulon]

Thanks @RoanR and sorry for the delay.