xcompile: use $() instead of backticks

While the backtick syntax isn't actually deprecated, the $() syntax
is preferred.  Since both styles were being used in this script, settle
on the new standard for all cases.

Change-Id: I33770d666781b4fa34c909411e0d220c2540dbb4
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://review.coreboot.org/12843
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

0 files changed, 0 insertions, 0 deletions