dev: Terminal output's dump name conflicts

dev: Terminal output's dump name conflicts

The recently Terminal dump options name introduced
in patch 1c72e90 conflict with MacOS stdio.h header.

From stdio.h:

#define	stdin	__stdinp
#define	stdout	__stdoutp
#define	stderr	__stderrp

To remove this conflict, the TerminalDump options are renamed.

Change-Id: I1b60fa1031328fc32d6a58bf7889b6e479d95219
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/20959
Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
Maintainer: Jason Lowe-Power <jason@lowepower.com>
Tested-by: kokoro <noreply+kokoro@google.com>