kernel-build-setup: Record crosscompiler version, for reals

Signed-off-by: Joel Stanley <joel@jms.id.au>
diff --git a/kernel-build-setup.sh b/kernel-build-setup.sh
index eb1df4c..de3253f 100755
--- a/kernel-build-setup.sh
+++ b/kernel-build-setup.sh
@@ -93,7 +93,7 @@
 fi
 
 # Record the version in the logs
-$\{CROSS_COMPILER} --version
+$\{CROSS_COMPILER}gcc --version
 
 ARCH=arm CROSS_COMPILE=\${CROSS_COMPILER} make aspeed_defconfig
 ARCH=arm CROSS_COMPILE=\${CROSS_COMPILER} make -j$(($(nproc) / 4))