gen_ipmi_sensor.pl: install this script

Change-Id: I44a016f600c882c1cc4743bead2c8b54567512b7
Signed-off-by: Ratan Gupta <ratagupt@in.ibm.com>
diff --git a/Build.PL b/Build.PL
index 7623d21..e62edfc 100644
--- a/Build.PL
+++ b/Build.PL
@@ -8,6 +8,7 @@
                      'gen_devtree.pl',
                      'gen_fru_properties.pl',
                      'gen_ipmi_fru.pl',
+                     'gen_ipmi_sensor.pl',
                      'gen_led_groups.pl',
                      'gen_openpower_fru.pl',
                      'hwmon.pl'],