Staging: ipack: change naming convention in TODO file

Use the ANSI/VITA 4.0-1995 (S2011) naming convention for the mezzanine or
daughter boards. They are called IP modules in the Standard.
Signed-off-by: NSamuel Iglesias Gonsálvez <siglesias@igalia.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/ipack/TODO

@@ -3,7 +3,7 @@
 Introduction
 ============
 
-These drivers add support for IndustryPack devices: carrier and mezzanine
+These drivers add support for IndustryPack devices: carrier and IP module
 boards.
 
 The ipack driver is just an abstraction of the bus providing the common
@@ -31,7 +31,7 @@ Ipack
 -----
 
 * The structures and API exported can be improved a lot. For example, the
-  way to unregistering mezzanine devices, doing the mezzanine driver a call to
+  way to unregistering IP module devices, doing the IP module driver a call to
   remove_device() to notify the carrier driver, or the opposite with the call to
   the ipack_driver_ops' remove() function could be improved.