tools: add short alias -s to NIC binding status

This patch adds -s as an alias to --status in dpdk_nic_bind.py,
providing a convenient shorthand.

Signed-off-by: Harry van Haaren <harry.van.haaren@intel.com>
Acked-by: Ferruh Yigit <ferruh.yigit@intel.com>

tools/dpdk_nic_bind.py

@@ -68,7 +68,7 @@ def usage():
     --help, --usage:
         Display usage information and quit
 
-    --status:
+    -s, --status:
         Print the current status of all known network interfaces.
         For each device, it displays the PCI domain, bus, slot and function,
         along with a text description of the device. Depending upon whether the
@@ -477,7 +477,7 @@ def parse_args():
         sys.exit(0)
 
     try:
-        opts, args = getopt.getopt(sys.argv[1:], "b:u",
+        opts, args = getopt.getopt(sys.argv[1:], "b:us",
                                ["help", "usage", "status", "force",
                                 "bind=", "unbind"])
     except getopt.GetoptError, error:
@@ -489,7 +489,7 @@ def parse_args():
         if opt == "--help" or opt == "--usage":
             usage()
             sys.exit(0)
-        if opt == "--status":
+        if opt == "--status" or opt == "-s":
             status_flag = True
         if opt == "--force":
             force_flag = True