xgcc: fix grouping of conditions in buildgcc for Ada

No idea where the escaped parentheses come from but they
are no good. Without this patch I see errors with bash and dash:
  ./buildgcc: line 1198: (: command not found
  ./buildgcc: line 1199: (: command not found

The patch uses curly brackets for grouping since they don't
launch a subshell - unlike using unescaped parentheses which
would work too.
shellcheck is happy with either variant (and the original one(!)).

Change-Id: I44fbc659f5b54515e43e85680b1ab0a824b781a7
Signed-off-by: Stefan Tauner <stefan.tauner@gmx.at>
Reviewed-on: https://review.coreboot.org/27771
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-by: Nico Huber <nico.h@gmx.de>

0 files changed, 0 insertions, 0 deletions