[S] Change in flashrom[1.0.x]: test_build.sh: Use multiple cores if Make is used

[Felix Singer (Code Review)]

Attention is currently required from: Nico Huber, Thomas Heijligen, Angel Pons.

Hello build bot (Jenkins), Nico Huber, Thomas Heijligen, Angel Pons,

I'd like you to do a code review.
Please visit

https://review.coreboot.org/c/flashrom/+/68001

to review the following change.

Change subject: test_build.sh: Use multiple cores if Make is used
......................................................................

test_build.sh: Use multiple cores if Make is used

Signed-off-by: Felix Singer 
Change-Id: Ia67e9202e49f1b4bc3301399a8ec741ac01c3ce0
Reviewed-on: https://review.coreboot.org/c/flashrom/+/67244
Reviewed-by: Thomas Heijligen 
Reviewed-by: Nico Huber 
Tested-by: build bot (Jenkins) 
Reviewed-by: Angel Pons 
---
M test_build.sh
1 file changed, 16 insertions(+), 1 deletion(-)

git pull ssh://review.coreboot.org:29418/flashrom refs/changes/01/68001/1

diff --git a/test_build.sh b/test_build.sh
index f7118e0..48d5fa8 100755
--- a/test_build.sh
+++ b/test_build.sh
@@ -14,5 +14,5 @@
 for option in ${make_programmer_opts}; do
    echo "Building ${option}"
    make clean
-	make CONFIG_NOTHING=yes CONFIG_${option}=yes
+	make -j $(nproc) CONFIG_NOTHING=yes CONFIG_${option}=yes
 done