torture: Rename RCU_KMAKE_ARG to TORTURE_KMAKE_ARG

This commit makes the torture scripts a bit more RCU-independent by
changing RCU_KMAKE_ARG to TORTURE_KMAKE_ARG.  It also removes the
unnecessary export command.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
diff --git a/tools/testing/selftests/rcutorture/bin/kvm.sh b/tools/testing/selftests/rcutorture/bin/kvm.sh
index 59945b7..04ad1f98 100644
--- a/tools/testing/selftests/rcutorture/bin/kvm.sh
+++ b/tools/testing/selftests/rcutorture/bin/kvm.sh
@@ -40,7 +40,7 @@
 PATH=${KVM}/bin:$PATH; export PATH
 TORTURE_DEFCONFIG=defconfig
 TORTURE_INITRD="$KVM/initrd"; export TORTURE_INITRD
-RCU_KMAKE_ARG=""; export RCU_KMAKE_ARG
+TORTURE_KMAKE_ARG=""
 TORTURE_SUITE=rcu
 resdir=""
 configs=""
@@ -118,7 +118,7 @@
 		;;
 	--kmake-arg)
 		checkarg --kmake-arg "(kernel make arguments)" $# "$2" '.*' '^error$'
-		RCU_KMAKE_ARG="$2"; export RCU_KMAKE_ARG
+		TORTURE_KMAKE_ARG="$2"
 		shift
 		;;
 	--kversion)
@@ -376,7 +376,7 @@
 	echo PATH="$PATH; export PATH"
 	echo RCU_BUILDONLY="$RCU_BUILDONLY; export RCU_BUILDONLY"
 	echo TORTURE_INITRD="$TORTURE_INITRD; export TORTURE_INITRD"
-	echo RCU_KMAKE_ARG="$RCU_KMAKE_ARG; export RCU_KMAKE_ARG"
+	echo TORTURE_KMAKE_ARG="$TORTURE_KMAKE_ARG; export TORTURE_KMAKE_ARG"
 	echo RCU_QEMU_CMD="$RCU_QEMU_CMD; export RCU_QEMU_CMD"
 	echo RCU_QEMU_INTERACTIVE="$RCU_QEMU_INTERACTIVE; export RCU_QEMU_INTERACTIVE"
 	echo RCU_QEMU_MAC="$RCU_QEMU_MAC; export RCU_QEMU_MAC"