test/hello_world: use P9MAMBO_ to differentiate from P8

Helps if you're building mambo from source (or haven't used the
packages in exactly the way they install) to ensure you run both
the p8 and p9 mambo simulators for testing.

Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>

test/hello_world/run_mambo_p9_hello_world.sh

@@ -1,16 +1,15 @@
 #!/bin/bash
 
-
-if [ -z "$MAMBO_PATH" ]; then
-    MAMBO_PATH=/opt/ibm/systemsim-p9/
+if [ -z "$P9MAMBO_PATH" ]; then
+    P9MAMBO_PATH=/opt/ibm/systemsim-p9/
 fi
 
-if [ -z "$MAMBO_BINARY" ]; then
-    MAMBO_BINARY="/run/p9/power9"
+if [ -z "$P9MAMBO_BINARY" ]; then
+    P9MAMBO_BINARY="/run/p9/power9"
 fi
 
-if [ ! -x "$MAMBO_PATH/$MAMBO_BINARY" ]; then
-    echo "Could not find executable MAMBO_BINARY ($MAMBO_PATH/$MAMBO_BINARY). Skipping hello_world test";
+if [ ! -x "$P9MAMBO_PATH/$P9MAMBO_BINARY" ]; then
+    echo "Could not find executable P9MAMBO_BINARY ($P9MAMBO_PATH/$MAMBO_BINARY). Skipping hello_world test";
     exit 0;
 fi
 
@@ -38,7 +37,7 @@ trap "rm -f -- '$t'" EXIT
 ( cd external/mambo; 
 cat <<EOF | expect
 set timeout 30
-spawn $MAMBO_PATH/$MAMBO_BINARY -n -f ../../test/hello_world/run_hello_world.tcl
+spawn $P9MAMBO_PATH/$P9MAMBO_BINARY -n -f ../../test/hello_world/run_hello_world.tcl
 expect {
 timeout { send_user "\nTimeout waiting for hello world\n"; exit 1 }
 eof { send_user "\nUnexpected EOF\n;" exit 1 }